[FFmpeg-trac] #8738(undetermined:reopened): subtitle filter can't render indic languages

FFmpeg trac at avcodec.org
Sun Jun 14 23:39:40 EEST 2020


#8738: subtitle filter can't render indic languages
-------------------------------------+-------------------------------------
             Reporter:  webofunni    |                    Owner:
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by webofunni):

 '''subtitle filter not working :'''


 {{{
 # ffmpeg -i /media/test.mp4 -vf subtitles=/media/test.srt
 /media/testout.mp4 -y

 ffmpeg version N-98194-g584d334 Copyright (c) 2000-2020 the FFmpeg
 developers
   built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39)
   configuration: --prefix=/home/unni/ffmpeg_build --pkg-config-
 flags=--static --extra-cflags=-I/home/unni/ffmpeg_build/include --extra-
 ldflags=-L/home/unni/ffmpeg_build/lib --extra-libs=-lpthread --extra-
 libs=-lm --bindir=/home/unni/bin --enable-gpl --enable-libfdk_aac
 --enable-libfreetype --enable-libmp3lame --enable-libx264 --enable-nonfree
 --enable-libass
   libavutil      56. 55.100 / 56. 55.100
   libavcodec     58. 92.100 / 58. 92.100
   libavformat    58. 46.101 / 58. 46.101
   libavdevice    58. 11.100 / 58. 11.100
   libavfilter     7. 86.100 /  7. 86.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
   libpostproc    55.  8.100 / 55.  8.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/media/test.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf58.29.100
   Duration: 00:00:10.00, start: 0.000000, bitrate: 13 kb/s
     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
 1280x720 [SAR 1:1 DAR 16:9], 10 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
 (default)
     Metadata:
       handler_name    : VideoHandler
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
 Press [q] to stop, [?] for help
 [Parsed_subtitles_0 @ 0x49f6700] Shaper: FriBidi 1.0.9 (SIMPLE) HarfBuzz-
 ng 2.6.7 (COMPLEX)
 [Parsed_subtitles_0 @ 0x49f6700] Using font provider fontconfig
 [libx264 @ 0x4302440] using SAR=1/1
 [libx264 @ 0x4302440] using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3
 SSE4.2 AVX
 [libx264 @ 0x4302440] profile High, level 3.1, 4:2:0, 8-bit
 [libx264 @ 0x4302440] 264 - core 160 - H.264/MPEG-4 AVC codec - Copyleft
 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=3
 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00
 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0
 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1
 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0
 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
 Output #0, mp4, to '/media/testout.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf58.46.101
     Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p,
 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
     Metadata:
       handler_name    : VideoHandler
       encoder         : Lavc58.92.100 libx264
     Side data:
       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
 frame=   56 fps=0.0 q=29.0 size=       0kB time=00:00:00.40 bitrate=
 1.0kbits/s speed=0.777x
 [Parsed_subtitles_0 @ 0x49f6700] fontselect: (Arial, 400, 0) ->
 /usr/share/fonts/dejavu/DejaVuSans.ttf, 0, DejaVuSans
 [Parsed_subtitles_0 @ 0x49f6700] Glyph 0xD38 not found, selecting one more
 font for (Arial, 400, 0)
 [Parsed_subtitles_0 @ 0x49f6700] fontselect: (Arial, 400, 0) ->
 /usr/share/fonts/smc/RaghuMalayalamSans.ttf, 0, RaghuMalayalamSans
 frame=   89 fps= 88 q=29.0 size=       0kB time=00:00:01.50 bitrate=
 0.3kbits/s speed=1.47x
 frame=  136 fps= 89 q=29.0 size=       0kB time=00:00:03.06 bitrate=
 0.1kbits/s speed=2.01x
 frame=  183 fps= 90 q=29.0 size=       0kB time=00:00:04.63 bitrate=
 0.1kbits/s speed=2.28x
 frame=  227 fps= 89 q=29.0 size=       0kB time=00:00:06.10 bitrate=
 0.1kbits/s speed= 2.4x
 frame=  276 fps= 91 q=29.0 size=       0kB time=00:00:07.73 bitrate=
 0.0kbits/s speed=2.54x
 frame=  300 fps= 86 q=29.0 Lsize=      33kB time=00:00:09.90 bitrate=
 27.0kbits/s speed=2.85x
 video:28kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 15.360404%
 [libx264 @ 0x4302440] frame I:3     Avg QP: 8.75  size:  4692
 [libx264 @ 0x4302440] frame P:75    Avg QP:10.15  size:    71
 [libx264 @ 0x4302440] frame B:222   Avg QP:13.67  size:    40
 [libx264 @ 0x4302440] consecutive B-frames:  1.0%  0.0%  3.0% 96.0%
 [libx264 @ 0x4302440] mb I  I16..4: 94.7%  3.5%  1.7%
 [libx264 @ 0x4302440] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.0%  0.0%
 0.0%  0.0%  0.0%    skip:100.0%
 [libx264 @ 0x4302440] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.1%  0.0%
 0.0%  direct: 0.0%  skip:99.9%  L0:81.9% L1:18.1% BI: 0.0%
 [libx264 @ 0x4302440] 8x8 transform intra:4.0% inter:3.7%
 [libx264 @ 0x4302440] coded y,uvDC,uvAC intra: 1.3% 0.0% 0.0% inter: 0.0%
 0.0% 0.0%
 [libx264 @ 0x4302440] i16 v,h,dc,p: 98%  0%  2%  0%
 [libx264 @ 0x4302440] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 64% 11% 25%  0%  0%
 0%  0%  0%  0%
 [libx264 @ 0x4302440] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 34% 18% 20%  4%  5%
 6%  5%  5%  3%
 [libx264 @ 0x4302440] i8c dc,h,v,p: 100%  0%  0%  0%
 [libx264 @ 0x4302440] Weighted P-Frames: Y:1.3% UV:0.0%
 [libx264 @ 0x4302440] ref P L0: 90.3%  4.0%  2.4%  3.2%
 [libx264 @ 0x4302440] ref B L0: 76.0% 24.0%
 [libx264 @ 0x4302440] ref B L1: 97.4%  2.6%
 [libx264 @ 0x4302440] kb/s:22.59
 }}}


 '''ass filter working :'''


 {{{
 # ffmpeg -i /media/test.mp4 -vf ass=/media/test.ass /media/testout.mp4 -y

 ffmpeg version N-98194-g584d334 Copyright (c) 2000-2020 the FFmpeg
 developers
   built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39)
   configuration: --prefix=/home/unni/ffmpeg_build --pkg-config-
 flags=--static --extra-cflags=-I/home/unni/ffmpeg_build/include --extra-
 ldflags=-L/home/unni/ffmpeg_build/lib --extra-libs=-lpthread --extra-
 libs=-lm --bindir=/home/unni/bin --enable-gpl --enable-libfdk_aac
 --enable-libfreetype --enable-libmp3lame --enable-libx264 --enable-nonfree
 --enable-libass
   libavutil      56. 55.100 / 56. 55.100
   libavcodec     58. 92.100 / 58. 92.100
   libavformat    58. 46.101 / 58. 46.101
   libavdevice    58. 11.100 / 58. 11.100
   libavfilter     7. 86.100 /  7. 86.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
   libpostproc    55.  8.100 / 55.  8.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/media/test.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf58.29.100
   Duration: 00:00:10.00, start: 0.000000, bitrate: 13 kb/s
     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
 1280x720 [SAR 1:1 DAR 16:9], 10 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
 (default)
     Metadata:
       handler_name    : VideoHandler
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
 Press [q] to stop, [?] for help
 [Parsed_ass_0 @ 0x3c90700] Shaper: FriBidi 1.0.9 (SIMPLE) HarfBuzz-ng
 2.6.7 (COMPLEX)
 [Parsed_ass_0 @ 0x3c90700] Using font provider fontconfig
 [Parsed_ass_0 @ 0x3c90700] Added subtitle file: '/media/test.ass' (2
 styles, 3 events)
 [libx264 @ 0x359c440] using SAR=1/1
 [libx264 @ 0x359c440] using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3
 SSE4.2 AVX
 [libx264 @ 0x359c440] profile High, level 3.1, 4:2:0, 8-bit
 [libx264 @ 0x359c440] 264 - core 160 - H.264/MPEG-4 AVC codec - Copyleft
 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=3
 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00
 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0
 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1
 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0
 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
 Output #0, mp4, to '/media/testout.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf58.46.101
     Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p,
 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
     Metadata:
       handler_name    : VideoHandler
       encoder         : Lavc58.92.100 libx264
     Side data:
       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
 [Parsed_ass_0 @ 0x3c90700] fontselect: (Arial, 400, 0) ->
 /usr/share/fonts/dejavu/DejaVuSans.ttf, 0, DejaVuSans
 [Parsed_ass_0 @ 0x3c90700] Glyph 0xD38 not found, selecting one more font
 for (Arial, 400, 0)
 [Parsed_ass_0 @ 0x3c90700] fontselect: (Arial, 400, 0) ->
 /usr/share/fonts/smc/RaghuMalayalamSans.ttf, 0, RaghuMalayalamSans
 frame=   69 fps=0.0 q=29.0 size=       0kB time=00:00:00.83 bitrate=
 0.5kbits/s speed=1.66x
 frame=  120 fps=118 q=29.0 size=       0kB time=00:00:02.53 bitrate=
 0.2kbits/s speed=2.49x
 frame=  173 fps=114 q=29.0 size=       0kB time=00:00:04.30 bitrate=
 0.1kbits/s speed=2.83x
 frame=  223 fps=110 q=29.0 size=       0kB time=00:00:05.96 bitrate=
 0.1kbits/s speed=2.94x
 frame=  274 fps=108 q=29.0 size=       0kB time=00:00:07.66 bitrate=
 0.1kbits/s speed=3.02x
 frame=  300 fps=100 q=29.0 Lsize=      31kB time=00:00:09.90 bitrate=
 25.5kbits/s speed=3.31x
 video:26kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 16.406828%
 [libx264 @ 0x359c440] frame I:3     Avg QP: 8.42  size:  4101
 [libx264 @ 0x359c440] frame P:75    Avg QP:10.16  size:    71
 [libx264 @ 0x359c440] frame B:222   Avg QP:13.67  size:    40
 [libx264 @ 0x359c440] consecutive B-frames:  1.0%  0.0%  3.0% 96.0%
 [libx264 @ 0x359c440] mb I  I16..4: 96.9%  1.6%  1.5%
 [libx264 @ 0x359c440] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.0%  0.0%
 0.0%  0.0%  0.0%    skip:100.0%
 [libx264 @ 0x359c440] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.0%  0.0%
 0.0%  direct: 0.0%  skip:100.0%  L0:81.0% L1:19.0% BI: 0.0%
 [libx264 @ 0x359c440] 8x8 transform intra:1.9% inter:0.0%
 [libx264 @ 0x359c440] coded y,uvDC,uvAC intra: 1.2% 0.0% 0.0% inter: 0.0%
 0.0% 0.0%
 [libx264 @ 0x359c440] i16 v,h,dc,p: 98%  0%  2%  0%
 [libx264 @ 0x359c440] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 46% 10% 43%  0%  0%
 0%  0%  0%  0%
 [libx264 @ 0x359c440] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 37% 19% 17%  3%  5%
 6%  4%  6%  3%
 [libx264 @ 0x359c440] i8c dc,h,v,p: 100%  0%  0%  0%
 [libx264 @ 0x359c440] Weighted P-Frames: Y:1.3% UV:0.0%
 [libx264 @ 0x359c440] ref P L0: 88.0%  8.0%  4.0%
 [libx264 @ 0x359c440] ref B L0: 73.4% 26.6%
 [libx264 @ 0x359c440] kb/s:21.11
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8738#comment:9>
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