[FFmpeg-trac] #5846(undetermined:closed): Extract text subtitles in UTF-8 with BOM

FFmpeg trac at avcodec.org
Thu Sep 15 23:05:33 EEST 2016


#5846: Extract text subtitles in UTF-8 with BOM
-------------------------------------+-------------------------------------
             Reporter:  edumj        |                    Owner:
                 Type:  enhancement  |                   Status:  closed
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |  needs_more_info
Analyzed by developer:  0            |               Blocked By:
                                     |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by edumj):

 Ok,

 I have this DVB recording
 [https://mega.nz/#!yYljELaY!vaPvtLnbNc23VjhITRTfKk3Q3Z7ZoXh2mfYSPFi22-Q
 20131121_2345 Espinete en Torres y Reyes.ts], and it has DVB Subtitles and

 Tetelext Subtitles:

 {{{
 General
 ID                                       : 1008 (0x3F0)
 Nombre completo                          : E:\Mis Documentos\Convertir a
 Xvid\+Pa Convertir a XviD\MediaInfo para sacar Info\ffmpeg
 Subtitulos\DVB_Teletext con ffmpeg¿

 \20131121_2345 Espinete en Torres y Reyes.ts
 Formato                                  : MPEG-TS
 Tamaño del archivo                       : 34,6MB
 Duración                                 : 1min.
 Duration_Start                           : UTC 2013-11-21 22:49:48
 Duration_End                             : UTC 2013-11-21 22:50:53
 Modo de tasa de bits                     : Variable
 Tasa de bits total                       : 4 205Kbps
 NetworkName                              : RGE CAT
 OriginalNetworkName                      : Spanish Digital Terrestrial
 Television
 País                                     : ESP (1) / ESP (2)
 TimeZone                                 : +01:00:00 / +00:00:00

 Video
 ID                                       : 201 (0xC9)
 ID Menú                                  : 491 (0x1EB)
 Formato                                  : MPEG Video
 Formato de la versión                    : Version 2
 Formato del perfil                       : Main at Main
 Ajustes del formato, BVOP                : Si
 Ajustes del formato, Matrix              : Personlizado
 Format_Settings_GOP                      : Variable
 ID Códec                                 : 2
 Duración                                 : 1min.
 Tipo de tasa de bits                     : Variable
 Tasa de bits                             : 3 640Kbps
 Ancho                                    : 720pixeles
 Alto                                     : 576pixeles
 Relación de aspecto                      : 16:9
 Velocidad de cuadro                      : 25,000fps
 Estándar                                 : PAL
 ColorSpace                               : YUV
 ChromaSubsampling                        : 4:2:0
 BitDepth/String                          : 8bits
 Tipo de exploración                      : Entrelazado
 Orden de la exploración                  : Campo superior primero
 Bits/(Pixel*cuadro)                      : 0.351
 Tamaño de pista                          : 29,2MB (84%)

 Audio #1
 ID                                       : 203 (0xCB)
 ID Menú                                  : 491 (0x1EB)
 Formato                                  : MPEG Audio
 Formato de la versión                    : Version 1
 Formato del perfil                       : Layer 2
 ID Códec                                 : 3
 Duración                                 : 1min.
 Tipo de tasa de bits                     : Constante
 Tasa de bits                             : 192Kbps
 Canal(es)                                : 2canales
 Velocidad de muestreo                    : 48,0KHz
 Demora del video                         : -592ms
 Tamaño de pista                          : 1,56MB (5%)
 Idioma                                   : Español

 Audio #2
 ID                                       : 204 (0xCC)
 ID Menú                                  : 491 (0x1EB)
 Formato                                  : MPEG Audio
 Formato de la versión                    : Version 1
 Formato del perfil                       : Layer 2
 ID Códec                                 : 3
 Duración                                 : 1min.
 Tipo de tasa de bits                     : Constante
 Tasa de bits                             : 192Kbps
 Canal(es)                                : 2canales
 Velocidad de muestreo                    : 48,0KHz
 Demora del video                         : -592ms
 Tamaño de pista                          : 1,56MB (5%)
 Idioma                                   : qaa

 Texto #1
 ID                                       : 202 (0xCA)-100
 ID Menú                                  : 491 (0x1EB)
 Formato                                  : Teletext
 Idioma                                   : Español

 Texto #2
 ID                                       : 202 (0xCA)-888
 ID Menú                                  : 491 (0x1EB)
 Formato                                  : Teletext Subtitle
 Idioma                                   : Español

 Texto #3
 ID                                       : 211 (0xD3)
 ID Menú                                  : 491 (0x1EB)
 Formato                                  : DVB Subtitle
 ID Códec                                 : 6
 Duración                                 : 1min.
 Demora del video                         : 1seg.
 Idioma                                   : Español

 Menú
 ID                                       : 200 (0xC8)
 ID Menú                                  : 491 (0x1EB)
 Duración                                 : 1min.
 Lista                                    : 201 (0xC9) (MPEG Video) / 202
 (0xCA) () / 203 (0xCB) (MPEG Audio, Español) / 204 (0xCC) (MPEG Audio,
 qaa) / 205 (0xCD) (MPEG Audio)

 / 211 (0xD3) (DVB Subtitle, Español) / 215 (0xD7) () / 8120 (0x1FB8) (SCTE
 35)
 Idioma                                   :  /  / Español / qaa /  /
 Español
 Nombre del servicio                      : La 2
 Proveedor de servicios                   : RTVE
 Tipo de servicio                         : digital television
 UTC 2013-11-21 00:12:42                  : es:Remando Al Viento / es: /
 movie/drama /  / 01:33:45 /
 UTC 2013-11-21 01:46:27                  : es:Conciertos Radio 3 2013 /
 es: / rock/pop /  / 00:27:19 /
 UTC 2013-11-21 02:13:46                  : es:Noche Tematica / es: /
 education/science/factual topics /  / 00:55:59 /
 UTC 2013-11-21 03:09:45                  : es:Tve Es Musica / es: /
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 game show/quiz/contest /  / 00:42:04 /
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 UTC 2013-11-21 21:00:50                  : es:La Historia Del Mundo / es:
 / social/political issues/economics /  / 00:49:10 /
 UTC 2013-11-21 21:50:00                  : es:Torres Y Reyes / es: /
 social/political issues/economics /  / 01:19:46 / Running
 UTC 2013-11-21 23:09:46                  : es:Crónicas / es: / news
 magazine /  / 00:44:22 / Not running
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 undefined /  / 00:35:00 /
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 music/ballet/dance /  / 00:02:00 /
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 UTC 2013-11-27 03:00:00                  : es:Sin información / es: /
 news/current affairs /  / 66:40:00 /


 }}}

 Then I can extract Teletext Subtitles with ccextractorwin.exe or with
 [https://ffmpeg.zeranoe.com/forum/viewtopic.php?f=10&t=1390&sid=1c67e4cf935dcef8d494c376a34a3d93
 ffmpeg.zvbi.exe] (the only ffmpeg version I found wich was compiled with
 libzvbi, otherwise I can't extract Teletext with ffmpeg)

 If I extract Teletext Subtitles with '''ccextractorwin.exe''' with:

 {{{
 "ccextractorwin.exe"     "20131121_2345 Espinete en Torres y Reyes.ts"
 --goptime -autoprogram --nofontcolor   -tpage 888              -out=srt -o
 "pag_888 (ccextractorwin).srt"
 }}}

 The ouptut is:

 {{{
 CCExtractor 0.77, Carlos Fernandez Sanz, Volker Quetschke.
 Teletext portions taken from Petr Kutalek's telxcc
 --------------------------------------------------------------------------
 Input: 20131121_2345 Espinete en Torres y Reyes.ts
 [Extract: 1] [Stream mode: Autodetect]
 [Program : 0 ] [Hauppage mode: No] [Use MythTV code: Auto]

 [Timing mode: GOP (forced)] [Debug: No] [Buffer input: Yes]
 [Use pic_order_cnt_lsb for H.264: No] [Print CC decoder traces: No]
 [Target format: .srt] [Encoding: UTF-8] [Delay: 0] [Trim lines: No]
 [Add font color data: No] [Add font typesetting: Yes]
 [Convert case: No] [Video-edit join: No]
 [Extraction start time: not set (from start)]
 [Extraction end time: not set (to end)]
 [Live stream: No] [Clock frequency: 90000]
 Teletext page: [888]
 Start credits text: [None]
 Creating pag_888 (ccextractorwin).srt


 -----------------------------------------------------------------

 Opening file: 20131121_2345 Espinete en Torres y Reyes.ts
 Detected MP4 box with name: meta

 File seems to be a transport stream, enabling TS mode

 Analyzing data in general mode

 Problem: No TS header mark (filepos=96444). Received bytes:
 00000000 | 3A 29 83 72                                      | :)ƒr
 Skip forward to the next TS header mark.

 The program you selected (0) wasn't found in the first Program Association
 Table in the stream.
 I will continue reading the stream in case the program appears later.


 This TS file has more than one program. These are the program numbers
 found:
 490
 491
 492
 493
 495
 496
 497
 Still unsupported MPEG descriptor type=2 (02)
 Still unsupported MPEG descriptor type=3 (03)
 Still unsupported MPEG descriptor type=3 (03)
 Still unsupported MPEG descriptor type=3 (03)
 VBI/teletext stream ID 202 (0xca) for SID 491 (0x1eb)

   0%  |  00:00
   1%  |  00:00- Programme Identification Data = La 2
 - Universal Time Co-ordinated = Thu Nov 21 23:47:47 2013

   2%  |  00:01
   3%  |  00:01
   4%  |  00:02
 Notice: Teletext page with possible subtitles detected: 888

   5%  |  00:03
   6%  |  00:03
   7%  |  00:04
   8%  |  00:05
   9%  |  00:05
  10%  |  00:06
  11%  |  00:07
  12%  |  00:08
  13%  |  00:08
  14%  |  00:09
  15%  |  00:10
  16%  |  00:11
  17%  |  00:11
  18%  |  00:12
  19%  |  00:13
  20%  |  00:13
  21%  |  00:14
  22%  |  00:15
  23%  |  00:15
  24%  |  00:16
  25%  |  00:17
  26%  |  00:18
  27%  |  00:18
  28%  |  00:19
  29%  |  00:20
  30%  |  00:20
  31%  |  00:21
  32%  |  00:22
  33%  |  00:22
  34%  |  00:23
  35%  |  00:24
  36%  |  00:25
  37%  |  00:25
  38%  |  00:26
  39%  |  00:27
  40%  |  00:27
  41%  |  00:28
  42%  |  00:29
  43%  |  00:29
  44%  |  00:30
  45%  |  00:31
  46%  |  00:32
  47%  |  00:32
  48%  |  00:33
  49%  |  00:34
  50%  |  00:35
  51%  |  00:35
  52%  |  00:36
  53%  |  00:37
  54%  |  00:37
  55%  |  00:38
  56%  |  00:39
  57%  |  00:39
  58%  |  00:40
  59%  |  00:41
  60%  |  00:41
  61%  |  00:42
  62%  |  00:43
  63%  |  00:43
  64%  |  00:44
  65%  |  00:45
  66%  |  00:45
  67%  |  00:46
  68%  |  00:47
  69%  |  00:47
  70%  |  00:48
  71%  |  00:49
  72%  |  00:49
  73%  |  00:50
  74%  |  00:51
  75%  |  00:51
  76%  |  00:52
  77%  |  00:53
  78%  |  00:53
  79%  |  00:54
  80%  |  00:55
  81%  |  00:55
  82%  |  00:56
  83%  |  00:57
  84%  |  00:57
  85%  |  00:58
  86%  |  00:59
  87%  |  00:59
  88%  |  01:00
  89%  |  01:01
  90%  |  01:02
  91%  |  01:02
  92%  |  01:03
  93%  |  01:04
  94%  |  01:04
  95%  |  01:05
  96%  |  01:06
  97%  |  01:06
  98%  |  01:07
  99%  |  01:08
 100%  |  01:08
 Number of NAL_type_7: 0
 Number of VCL_HRD: 0
 Number of NAL HRD: 0
 Number of jump-in-frames: 0
 Number of num_unexpected_sei_length: 0

 Total frames time:        00:00:00:000  (0 frames at 29.97fps)

 Done, processing time = 0 seconds
 Teletext decoder: 1710 packets processed, 17 SRT frames written.
 This is beta software. Report issues to carlos at ccextractor org...

 }}}

 And the result is this UTF-8 encoded SRT file
 [https://mega.nz/#!fFVGzR7A!W8E_MnhcRb_JcI54h14ZkQHaNkTs1vd4BlH0vyx_e6U
 pag_888 (ccextractorwin).srt].


 But, if I extract them with '''ffmpeg.zvbi.exe''' with:

 {{{
 "ffmpeg.zvbi.exe"               -txt_page 888 -txt_format text
 -fix_sub_duration               -i "20131121_2345 Espinete en Torres y
 Reyes.ts"                                                        "pag_888
 (ffmpeg.zvbi).srt"
 }}}

 The output is:

 {{{
 ffmpeg version N-80123-gd74cc61 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.3.0 (GCC)
   configuration: --arch=x86 --target-os=mingw32 --cross-
 prefix=/home/rdp/dev/ffmpeg-windows-build-
 helpers/sandbox/cross_compilers/mingw-w64-i686/bin/i686-w64-mingw32-
 --pkg-

 config=pkg-config --disable-w32threads --enable-gpl --enable-libsoxr
 --enable-fontconfig --enable-libass --disable-libutvideo --enable-
 libbluray --enable-iconv --enable-

 libtwolame --extra-cflags=-DLIBTWOLAME_STATIC --enable-libzvbi --enable-
 libcaca --enable-libmodplug --extra-libs=-lstdc++ --extra-libs=-lpng
 --enable-libvidstab --enable-

 libx265 --enable-decklink --extra-libs=-loleaut32 --enable-libx264
 --enable-libxvid --enable-libmp3lame --enable-version3 --enable-zlib
 --enable-librtmp --enable-libvorbis --

 enable-libtheora --enable-libspeex --enable-libopenjpeg --enable-gnutls
 --enable-libgsm --enable-libfreetype --enable-libopus --enable-frei0r
 --enable-filter=frei0r --enable-

 bzlib --enable-libxavs --enable-libopencore-amrnb --enable-libopencore-
 amrwb --enable-libvo-amrwbenc --enable-libschroedinger --enable-libvpx
 --enable-libilbc --enable-

 libwavpack --enable-libwebp --enable-libgme --enable-dxva2 --enable-
 avisynth --enable-gray --enable-libopenh264 --enable-libmfx --extra-
 libs=-lpsapi --extra-cflags= --enable-

 static --disable-shared --prefix=/home/rdp/dev/ffmpeg-windows-build-
 helpers/sandbox/cross_compilers/mingw-w64-i686/i686-w64-mingw32 --enable-
 runtime-cpudetect
   libavutil      55. 24.100 / 55. 24.100
   libavcodec     57. 43.100 / 57. 43.100
   libavformat    57. 37.101 / 57. 37.101
   libavdevice    57.  0.101 / 57.  0.101
   libavfilter     6. 46.100 /  6. 46.100
   libswscale      4.  1.100 /  4.  1.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 [mp3 @ 006b31e0] Header missing
 [mp3 @ 006c9aa0] Header missing
 [mpeg2video @ 006aff00] Invalid frame dimensions 0x0.
     Last message repeated 1 times
 [mpegts @ 006aa880] start time for stream 4 is not set in
 estimate_timings_from_pts
 [mpegts @ 006aa880] PES packet size mismatch
 [mpegts @ 006aa880] Could not find codec parameters for stream 4 (Audio:
 mp3 ([3][0][0][0] / 0x0003), 0 channels, s16p): unspecified frame size
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 [mpegts @ 006aa880] Could not find codec parameters for stream 6 (Unknown:
 none ([5][0][0][0] / 0x0005)): unknown codec
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 [mpegts @ 006aa880] Could not find codec parameters for stream 7 (Unknown:
 none ([134][0][0][0] / 0x0086)): unknown codec
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 Input #0, mpegts, from '20131121_2345 Espinete en Torres y Reyes.ts':
   Duration: 00:01:09.22, start: 74195.554133, bitrate: 4198 kb/s
   Program 490
     Metadata:
       service_name    : La 1
       service_provider: RTVE
   Program 491
     Metadata:
       service_name    : La 2
       service_provider: RTVE
     Stream #0:0[0xc9]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
 yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn
     Stream #0:1[0xca](spa,spa): Subtitle: dvb_teletext ([6][0][0][0] /
 0x0006)
     Stream #0:2[0xcb](spa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
 stereo, s16p, 192 kb/s
     Stream #0:3[0xcc](qaa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
 stereo, s16p, 192 kb/s
     Stream #0:4[0xcd](spa): Audio: mp3 ([3][0][0][0] / 0x0003), 0
 channels, s16p (visual impaired)
     Stream #0:5[0xd3](spa): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
     Stream #0:6[0xd7]: Unknown: none ([5][0][0][0] / 0x0005)
     Stream #0:7[0x1fb8]: Unknown: none ([134][0][0][0] / 0x0086)
   Program 492
     Metadata:
       service_name    : 24h
       service_provider: RTVE
   Program 493
     Metadata:
       service_name    : Clan
       service_provider: RTVE
   Program 495
     Metadata:
       service_name    : Radio Nacional Catalunya
       service_provider: RNE
   Program 496
     Metadata:
       service_name    : Radio 5
       service_provider: RNE
   Program 497
     Metadata:
       service_name    : ?Ràdio 4
       service_provider: RNE
 [srt @ 054f03a0] Using AVStream.codec to pass codec parameters to muxers
 is deprecated, use AVStream.codecpar instead.
 [null @ 052f4680] Using AVStream.codec to pass codec parameters to muxers
 is deprecated, use AVStream.codecpar instead.
     Last message repeated 1 times
 Output #0, srt, to 'pag_888 (ffmpeg.zvbi).srt':
   Metadata:
     encoder         : Lavf57.37.101
     Stream #0:0(spa,spa): Subtitle: subrip
     Metadata:
       encoder         : Lavc57.43.100 srt
 Output #1, null, to 'nul':
   Metadata:
     encoder         : Lavf57.37.101
     Stream #1:0: Video: wrapped_avframe, yuv420p, 720x576 [SAR 64:45 DAR
 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn
     Metadata:
       encoder         : Lavc57.43.100 wrapped_avframe
     Stream #1:1(spa): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
     Metadata:
       encoder         : Lavc57.43.100 pcm_s16le
 Stream mapping:
   Stream #0:1 -> #0:0 (dvb_teletext (libzvbi_teletextdec) -> subrip (srt))
   Stream #0:0 -> #1:0 (mpeg2video (native) -> wrapped_avframe (native))
   Stream #0:2 -> #1:1 (mp2 (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 [mp2 @ 056c6a80] Header missing
 Error while decoding stream #0:2: Invalid data found when processing input
 frame=  650 fps=0.0 q=-0.0 size=       0kB time=00:00:26.68 bitrate=
 0.1kbits/s speed=53.4x
 frame= 1564 fps=1564 q=-0.0 size=       1kB time=00:01:03.24 bitrate=
 0.1kbits/s speed=63.2x
 [mpegts @ 006aa880] PES packet size mismatch
 [mpeg2video @ 0561c260] ac-tex damaged at 25 16
 [mpeg2video @ 0561c260] Warning MVs not available
 [mpeg2video @ 0561c260] concealing 900 DC, 900 AC, 900 MV errors in P
 frame
 frame= 1712 fps=1528 q=-0.0 Lsize=       1kB time=00:01:09.24 bitrate=
 0.1kbits/s speed=61.8x
 video:642kB audio:12874kB subtitle:1kB other streams:0kB global
 headers:0kB muxing overhead: unknown
 }}}

 And the result is this UTF-8 encoded SRT file
 [https://mega.nz/#!vEFGGI4a!gXZyfP8_vTVjYQzVG4GCWprx0WtF1av5FHXc_m2lyBE
 pag_888 (ffmpeg.zvbi).srt], but without BOM (reported by

 Notepad++).



 Now, I convert both SRT's to IDX/SUB with Txt2Vobsub.exe:
 {{{
 "Txt2Vobsub.exe" "pag_888 (ffmpeg.zvbi).srt"    Microsoft_Sans_Serif 0 1
 20 0 130 -4 0 1 0 2 108 2 2
 }}}
 {{{
 "Txt2Vobsub.exe" "pag_888 (ccextractorwin).srt" Microsoft_Sans_Serif 0 1
 20 0 130 -4 0 1 0 2 108 2 2
 }}}
 No console output for this, it opens, converts and auto closes.

 At last, I convert original DVB recording to AVI (XviD) with idx/sub
 created with Txt2Vobsub.exe from SRT's extracted with ccextractorwin.exe
 and with subs extracted with

 ffmpeg:

 If I convert IDX/SUB from SRT's extracted with ccextractorwin.exe:
 {{{
 "ffmpeg.exe"            -palette
 "000000,000000,ffffff,000000,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff"
 -i "pag_888

 (ccextractorwin).idx"           -i "20131121_2345 Espinete en Torres y
 Reyes.ts"        -map 1:v:0      -map 1:a:0      -map 0:s:0      -scodec
 xsub    -c:v libxvid -b:v 1500k

 -vtag XVID -c:a libmp3lame -b:a 128k   "ffmpeg xsub (ccextractorwin
 subs).avi"
 }}}
 The output is:
 {{{
 ffmpeg version N-81452-g01aee81 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.4.0 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-
 bzlib --enable-libebur128 --

 enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-
 libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-
 libfreetype --enable-libgme --

 enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264
 --enable-libopenjpeg --

 enable-libopus --enable-librtmp --enable-libschroedinger --enable-
 libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-
 libtwolame --enable-libvidstab --

 enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-
 libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-
 libxavs --enable-libxvid --enable-

 libzimg --enable-lzma --enable-decklink --enable-zlib
   libavutil      55. 29.100 / 55. 29.100
   libavcodec     57. 54.100 / 57. 54.100
   libavformat    57. 48.100 / 57. 48.100
   libavdevice    57.  0.102 / 57.  0.102
   libavfilter     6. 54.100 /  6. 54.100
   libswscale      4.  1.100 /  4.  1.100
   libswresample   2.  1.100 /  2.  1.100
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, vobsub, from 'pag_888 (ccextractorwin).idx':
   Duration: N/A, bitrate: N/A
     Stream #0:0[0x0](es): Subtitle: dvd_subtitle, 720x576 (default)
 [mp3 @ 04a6a6c0] Header missing
 [mp3 @ 04a6b4e0] Header missing
 [mpeg2video @ 04a525c0] Invalid frame dimensions 0x0.
     Last message repeated 1 times
 [mpegts @ 04a4b5a0] start time for stream 4 is not set in
 estimate_timings_from_pts
 [mpegts @ 04a4b5a0] PES packet size mismatch
 [mpegts @ 04a4b5a0] Could not find codec parameters for stream 4 (Audio:
 mp3 ([3][0][0][0] / 0x0003), 0 channels, s16p): unspecified frame size
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 [mpegts @ 04a4b5a0] Could not find codec parameters for stream 6 (Unknown:
 none ([5][0][0][0] / 0x0005)): unknown codec
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 [mpegts @ 04a4b5a0] Could not find codec parameters for stream 7 (Unknown:
 none ([134][0][0][0] / 0x0086)): unknown codec
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 Input #1, mpegts, from '20131121_2345 Espinete en Torres y Reyes.ts':
   Duration: 00:01:09.22, start: 74195.554133, bitrate: 4198 kb/s
   Program 490
     Metadata:
       service_name    : La 1
       service_provider: RTVE
   Program 491
     Metadata:
       service_name    : La 2
       service_provider: RTVE
     Stream #1:0[0xc9]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
 yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Stream #1:1[0xca](spa,spa): Subtitle: dvb_teletext ([6][0][0][0] /
 0x0006)
     Stream #1:2[0xcb](spa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
 stereo, s16p, 192 kb/s
     Stream #1:3[0xcc](qaa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
 stereo, s16p, 192 kb/s
     Stream #1:4[0xcd](spa): Audio: mp3 ([3][0][0][0] / 0x0003), 0
 channels, s16p (visual impaired)
     Stream #1:5[0xd3](spa): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
     Stream #1:6[0xd7]: Unknown: none ([5][0][0][0] / 0x0005)
     Stream #1:7[0x1fb8]: Unknown: none ([134][0][0][0] / 0x0086)
   Program 492
     Metadata:
       service_name    : 24h
       service_provider: RTVE
   Program 493
     Metadata:
       service_name    : Clan
       service_provider: RTVE
   Program 495
     Metadata:
       service_name    : Radio Nacional Catalunya
       service_provider: RNE
   Program 496
     Metadata:
       service_name    : Radio 5
       service_provider: RNE
   Program 497
     Metadata:
       service_name    : ?Ràdio 4
       service_provider: RNE
 [avi @ 04f67060] Using AVStream.codec to pass codec parameters to muxers
 is deprecated, use AVStream.codecpar instead.
     Last message repeated 2 times
 [null @ 04addf20] Using AVStream.codec to pass codec parameters to muxers
 is deprecated, use AVStream.codecpar instead.
     Last message repeated 1 times
 Output #0, avi, to 'ffmpeg xsub (ccextractorwin subs).avi':
   Metadata:
     ISFT            : Lavf57.48.100
     Stream #0:0: Video: mpeg4 (libxvid) (XVID / 0x44495658), yuv420p,
 720x576 [SAR 64:45 DAR 16:9], q=2-31, 1500 kb/s, 25 fps, 25 tbn, 25 tbc
     Metadata:
       encoder         : Lavc57.54.100 libxvid
     Stream #0:1(spa): Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 48000
 Hz, stereo, s16p, delay 1105, padding 0, 128 kb/s
     Metadata:
       encoder         : Lavc57.54.100 libmp3lame
     Stream #0:2(es): Subtitle: xsub (DXSB / 0x42535844), 720x576 (default)
     Metadata:
       encoder         : Lavc57.54.100 xsub
 Output #1, null, to 'nul':
   Metadata:
     encoder         : Lavf57.48.100
     Stream #1:0: Video: wrapped_avframe, yuv420p, 720x576 [SAR 64:45 DAR
 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
     Metadata:
       encoder         : Lavc57.54.100 wrapped_avframe
     Stream #1:1(spa): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
     Metadata:
       encoder         : Lavc57.54.100 pcm_s16le
 Stream mapping:
   Stream #1:0 -> #0:0 (mpeg2video (native) -> mpeg4 (libxvid))
   Stream #1:2 -> #0:1 (mp2 (native) -> mp3 (libmp3lame))
   Stream #0:0 -> #0:2 (dvd_subtitle (dvdsub) -> xsub (native))
   Stream #1:0 -> #1:0 (mpeg2video (native) -> wrapped_avframe (native))
   Stream #1:2 -> #1:1 (mp2 (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 [mp2 @ 04a6fc60] Header missing
 Error while decoding stream #1:2: Invalid data found when processing input
 frame=   91 fps=0.0 q=8.0 q=-0.0 size=     811kB time=00:00:04.32
 bitrate=1538.8kbits/s speed=8.57x
 frame=  188 fps=187 q=7.0 q=-0.0 size=    1666kB time=00:00:11.08

 bitrate=1231.5kbits/s speed=  11x
 frame=  276 fps=183 q=9.0 q=-0.0 size=    2482kB time=00:00:15.16
 bitrate=1341.4kbits/s speed=10.1x
 frame=  375 fps=187 q=6.0 q=-0.0

 size=    3277kB time=00:00:15.68 bitrate=1712.3kbits/s speed=7.81x
 frame=  475 fps=189 q=9.0 q=-0.0 size=    4186kB time=00:00:24.08
 bitrate=1424.2kbits/s speed=9.59x


 frame=  569 fps=189 q=10.0 q=-0.0 size=    4960kB time=00:00:24.08
 bitrate=1687.2kbits/s speed=   8x
 frame=  673 fps=192 q=9.0 q=-0.0 size=    5788kB time=00:00:27.60

 bitrate=1717.9kbits/s speed=7.86x
 frame=  764 fps=190 q=9.0 q=-0.0 size=    6523kB time=00:00:36.16
 bitrate=1477.9kbits/s speed=9.01x
 frame=  859 fps=190 q=8.0 q=-0.0

 size=    7257kB time=00:00:36.16 bitrate=1644.0kbits/s speed=8.01x
 frame=  946 fps=189 q=13.0 q=-0.0 size=    7977kB time=00:00:39.12
 bitrate=1670.3kbits/s speed= 7.8x


 frame= 1031 fps=187 q=14.0 q=-0.0 size=    8687kB time=00:00:44.36
 bitrate=1604.3kbits/s speed=8.04x
 frame= 1121 fps=186 q=14.0 q=-0.0 size=    9464kB time=00:00:48.88

 bitrate=1586.1kbits/s speed=8.12x
 frame= 1217 fps=187 q=20.0 q=-0.0 size=   10174kB time=00:00:49.36
 bitrate=1688.5kbits/s speed=7.57x
 frame= 1299 fps=185 q=9.0 q=-0.0

 size=   10803kB time=00:00:52.64 bitrate=1681.2kbits/s speed= 7.5x
 frame= 1391 fps=185 q=10.0 q=-0.0 size=   11520kB time=00:00:59.64
 bitrate=1582.3kbits/s speed=7.93x


 frame= 1478 fps=184 q=10.0 q=-0.0 size=   12183kB time=00:00:59.80
 bitrate=1669.0kbits/s speed=7.45x
 frame= 1558 fps=183 q=11.0 q=-0.0 size=   12827kB time=00:01:03.00

 bitrate=1667.9kbits/s speed=7.39x
 frame= 1642 fps=182 q=13.0 q=-0.0 size=   13099kB time=00:01:06.36
 bitrate=1617.1kbits/s speed=7.35x
 [mpeg2video @ 04a6f3e0] ac-tex

 damaged at 25 16
 [mpeg2video @ 04a6f3e0] Warning MVs not available
 [mpeg2video @ 04a6f3e0] concealing 900 DC, 900 AC, 900 MV errors in P
 frame
 frame= 1712 fps=182 q=13.0 Lq=-0.0 size=   14303kB time=00:01:09.24
 bitrate=1692.2kbits/s speed=7.35x
 video:13719kB audio:13948kB subtitle:30kB other streams:0kB global
 headers:0kB muxing overhead: unknown

 }}}



 If I convert IDX/SUB from SRT's extracted with ffmpeg (without BOM):
 {{{
 "ffmpeg.exe"            -palette
 "000000,000000,ffffff,000000,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff,ffffff"
 -i "pag_888

 (ffmpeg.zvbi).idx"                              -i "20131121_2345 Espinete
 en Torres y Reyes.ts"        -map 1:v:0      -map 1:a:0      -map 0:s:0
 -scodec xsub    -c:v

 libxvid -b:v 1500k -vtag XVID -c:a libmp3lame -b:a 128k   "ffmpeg xsub
 (ffmpeg subs).avi"
 }}}
 The output is:
 {{{
 ffmpeg version N-81452-g01aee81 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.4.0 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-
 bzlib --enable-libebur128 --

 enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-
 libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-
 libfreetype --enable-libgme --

 enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264
 --enable-libopenjpeg --

 enable-libopus --enable-librtmp --enable-libschroedinger --enable-
 libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-
 libtwolame --enable-libvidstab --

 enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-
 libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-
 libxavs --enable-libxvid --enable-

 libzimg --enable-lzma --enable-decklink --enable-zlib
   libavutil      55. 29.100 / 55. 29.100
   libavcodec     57. 54.100 / 57. 54.100
   libavformat    57. 48.100 / 57. 48.100
   libavdevice    57.  0.102 / 57.  0.102
   libavfilter     6. 54.100 /  6. 54.100
   libswscale      4.  1.100 /  4.  1.100
   libswresample   2.  1.100 /  2.  1.100
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, vobsub, from 'pag_888 (ffmpeg.zvbi).idx':
   Duration: N/A, bitrate: N/A
     Stream #0:0[0x0](es): Subtitle: dvd_subtitle, 720x576 (default)
 [mp3 @ 0315a6e0] Header missing
 [mp3 @ 0315b500] Header missing
 [mpeg2video @ 03142480] Invalid frame dimensions 0x0.
     Last message repeated 1 times
 [mpegts @ 0313b580] start time for stream 4 is not set in
 estimate_timings_from_pts
 [mpegts @ 0313b580] PES packet size mismatch
 [mpegts @ 0313b580] Could not find codec parameters for stream 4 (Audio:
 mp3 ([3][0][0][0] / 0x0003), 0 channels, s16p): unspecified frame size
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 [mpegts @ 0313b580] Could not find codec parameters for stream 6 (Unknown:
 none ([5][0][0][0] / 0x0005)): unknown codec
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 [mpegts @ 0313b580] Could not find codec parameters for stream 7 (Unknown:
 none ([134][0][0][0] / 0x0086)): unknown codec
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 Input #1, mpegts, from '20131121_2345 Espinete en Torres y Reyes.ts':
   Duration: 00:01:09.22, start: 74195.554133, bitrate: 4198 kb/s
   Program 490
     Metadata:
       service_name    : La 1
       service_provider: RTVE
   Program 491
     Metadata:
       service_name    : La 2
       service_provider: RTVE
     Stream #1:0[0xc9]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
 yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Stream #1:1[0xca](spa,spa): Subtitle: dvb_teletext ([6][0][0][0] /
 0x0006)
     Stream #1:2[0xcb](spa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
 stereo, s16p, 192 kb/s
     Stream #1:3[0xcc](qaa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
 stereo, s16p, 192 kb/s
     Stream #1:4[0xcd](spa): Audio: mp3 ([3][0][0][0] / 0x0003), 0
 channels, s16p (visual impaired)
     Stream #1:5[0xd3](spa): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
     Stream #1:6[0xd7]: Unknown: none ([5][0][0][0] / 0x0005)
     Stream #1:7[0x1fb8]: Unknown: none ([134][0][0][0] / 0x0086)
   Program 492
     Metadata:
       service_name    : 24h
       service_provider: RTVE
   Program 493
     Metadata:
       service_name    : Clan
       service_provider: RTVE
   Program 495
     Metadata:
       service_name    : Radio Nacional Catalunya
       service_provider: RNE
   Program 496
     Metadata:
       service_name    : Radio 5
       service_provider: RNE
   Program 497
     Metadata:
       service_name    : ?Ràdio 4
       service_provider: RNE
 [avi @ 051a5360] Using AVStream.codec to pass codec parameters to muxers
 is deprecated, use AVStream.codecpar instead.
     Last message repeated 2 times
 [null @ 04ec00e0] Using AVStream.codec to pass codec parameters to muxers
 is deprecated, use AVStream.codecpar instead.
     Last message repeated 1 times
 Output #0, avi, to 'ffmpeg xsub (ffmpeg subs).avi':
   Metadata:
     ISFT            : Lavf57.48.100
     Stream #0:0: Video: mpeg4 (libxvid) (XVID / 0x44495658), yuv420p,
 720x576 [SAR 64:45 DAR 16:9], q=2-31, 1500 kb/s, 25 fps, 25 tbn, 25 tbc
     Metadata:
       encoder         : Lavc57.54.100 libxvid
     Stream #0:1(spa): Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 48000
 Hz, stereo, s16p, delay 1105, padding 0, 128 kb/s
     Metadata:
       encoder         : Lavc57.54.100 libmp3lame
     Stream #0:2(es): Subtitle: xsub (DXSB / 0x42535844), 720x576 (default)
     Metadata:
       encoder         : Lavc57.54.100 xsub
 Output #1, null, to 'nul':
   Metadata:
     encoder         : Lavf57.48.100
     Stream #1:0: Video: wrapped_avframe, yuv420p, 720x576 [SAR 64:45 DAR
 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
     Metadata:
       encoder         : Lavc57.54.100 wrapped_avframe
     Stream #1:1(spa): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
     Metadata:
       encoder         : Lavc57.54.100 pcm_s16le
 Stream mapping:
   Stream #1:0 -> #0:0 (mpeg2video (native) -> mpeg4 (libxvid))
   Stream #1:2 -> #0:1 (mp2 (native) -> mp3 (libmp3lame))
   Stream #0:0 -> #0:2 (dvd_subtitle (dvdsub) -> xsub (native))
   Stream #1:0 -> #1:0 (mpeg2video (native) -> wrapped_avframe (native))
   Stream #1:2 -> #1:1 (mp2 (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 [mp2 @ 0315fc00] Header missing
 Error while decoding stream #1:2: Invalid data found when processing input
 frame=   86 fps=0.0 q=10.0 q=-0.0 size=     757kB time=00:00:04.62
 bitrate=1341.1kbits/s speed=9.23x
 frame=  182 fps=182 q=7.0 q=-0.0 size=    1603kB time=00:00:11.46

 bitrate=1145.7kbits/s speed=11.4x
 frame=  272 fps=181 q=8.0 q=-0.0 size=    2434kB time=00:00:11.56
 bitrate=1724.9kbits/s speed=7.68x
 frame=  371 fps=185 q=5.0 q=-0.0

 size=    3251kB time=00:00:15.54 bitrate=1713.6kbits/s speed=7.75x
 frame=  470 fps=187 q=9.0 q=-0.0 size=    4135kB time=00:00:19.48
 bitrate=1738.8kbits/s speed=7.76x


 frame=  568 fps=189 q=10.0 q=-0.0 size=    4956kB time=00:00:24.42
 bitrate=1662.2kbits/s speed=8.11x
 frame=  670 fps=191 q=9.0 q=-0.0 size=    5768kB time=00:00:27.54

 bitrate=1715.5kbits/s speed=7.84x
 frame=  771 fps=192 q=9.0 q=-0.0 size=    6604kB time=00:00:36.54
 bitrate=1480.5kbits/s speed= 9.1x
 frame=  868 fps=192 q=8.0 q=-0.0

 size=    7327kB time=00:00:36.54 bitrate=1642.4kbits/s speed=8.09x
 frame=  955 fps=190 q=14.0 q=-0.0 size=    8066kB time=00:00:39.46
 bitrate=1674.3kbits/s speed=7.87x


 frame= 1037 fps=188 q=14.0 q=-0.0 size=    8734kB time=00:00:44.70
 bitrate=1600.5kbits/s speed= 8.1x
 frame= 1126 fps=187 q=15.0 q=-0.0 size=    9479kB time=00:00:49.22

 bitrate=1577.5kbits/s speed=8.18x
 frame= 1217 fps=187 q=20.0 q=-0.0 size=   10180kB time=00:00:49.36
 bitrate=1689.5kbits/s speed=7.57x
 frame= 1295 fps=184 q=9.0 q=-0.0

 size=   10761kB time=00:00:52.78 bitrate=1670.0kbits/s speed=7.52x
 frame= 1379 fps=183 q=11.0 q=-0.0 size=   11415kB time=00:00:59.98
 bitrate=1559.0kbits/s speed=7.97x


 frame= 1463 fps=182 q=11.0 q=-0.0 size=   12113kB time=00:00:59.98
 bitrate=1654.3kbits/s speed=7.47x
 frame= 1546 fps=181 q=11.0 q=-0.0 size=   12716kB time=00:01:02.86

 bitrate=1657.0kbits/s speed=7.37x
 frame= 1634 fps=181 q=12.0 q=-0.0 size=   13171kB time=00:01:06.04
 bitrate=1633.8kbits/s speed=7.31x
 [mpeg2video @ 0315f360] ac-tex

 damaged at 25 16
 [mpeg2video @ 0315f360] Warning MVs not available
 [mpeg2video @ 0315f360] concealing 900 DC, 900 AC, 900 MV errors in P
 frame
 frame= 1712 fps=181 q=13.0 Lq=-0.0 size=   14304kB time=00:01:09.24
 bitrate=1692.4kbits/s speed=7.31x
 video:13719kB audio:13948kB subtitle:32kB other streams:0kB global
 headers:0kB muxing overhead: unknown

 }}}


 And, if you open both converted videos, you will see that the one made
 form SRT without BOM (by ffmpeg) has "special characters" like accents,
 wrong:


 SRT in UTF-8 [https://mega.nz/#!yMcWHTCS!cR0nhMuegg3e3Ld68XMI-
 L3spcBxOv6jvUCJG4vCslg ffmpeg xsub (ccextractorwin subs).avi] -> Ok!

 SRT in UTF-8 without BOM [https://mega.nz/#!eNtwXLgD!IGDPGqZBPh-
 4ammBDZWPNSU9BdpU2iJ2WT_sdtelIck ffmpeg xsub (ffmpeg subs).avi] -> BAD!


 I don't think BOM are random chars (0xEF,0xBB,0xBF), if I understood
 [https://en.wikipedia.org/wiki/Byte_order_mark this], it says its meant to
 tell that it is Unicode "its only use in UTF-8 is to signal at the start
 that the text stream is encoded in UTF-8".

 [http://superuser.com/questions/904809/what-is-a-simple-way-to-
 prepend-a-utf-8-character-to-a-text-file-using-cmd here] I found a way to
 add BOM whith a .bat file, but it would be very usefull to could do it
 just with ffmpeg, so non english subs will have no problem with Unicode or
 'special' characters. Something like that "-bom" option that already
 existed??


 PD: The result is the same if this was a MKV video with UTF-8 Text
 subtitle (no problem with ANSI).

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5846#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


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