[FFmpeg-trac] #10384(undetermined:new): Bengali text not correctly rendered when using subtitles filter
FFmpeg
trac at avcodec.org
Wed May 24 18:10:29 EEST 2023
#10384: Bengali text not correctly rendered when using subtitles filter
-------------------------------------+-------------------------------------
Reporter: blubub | Type: defect
Status: new | Priority: important
Component: | Version:
undetermined | unspecified
Keywords: bugs | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug: In my subtitle file, there is সো text, but it rendered
as স text. (in Bengali language). I think this issue similar with this:
https://github.com/libass/libass/issues/682
How to reproduce:
{{{
% ffmpeg -i x.mp4 -preset veryfast -lavfi
"subtitles=subtitle.srt:force_style='Alignment=2,PrimaryColour=0xffffff,BackColour=0x33000000,OutlineColour=0x33000000,Fontname=Shonar
Bangla,BorderStyle=4,Outline=0,Shadow=0,Fontsize=22,Bold=0,Italic=0,Underline=0,MarginL=5,MarginR=5,MarginV=5'"
-crf 25 -c:a copy out.mp4 -y
ffmpeg version 2023-05-22-git-877ccaf776-full_build-www.gyan.dev Copyright
(c) 2000-2023 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration: --enable-gpl --enable-version3 --enable-static --disable-
w32threads --disable-autodetect --enable-fontconfig --enable-iconv
--enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma
--enable-libsnappy --enable-zlib --enable-librist --enable-libsrt
--enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray
--enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption
--enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi
--enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom
--enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-
mediafoundation --enable-libass --enable-frei0r --enable-libfreetype
--enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-
libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid
--enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va
--enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan
--enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme
--enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb
--enable-libmp3lame --enable-libshine --enable-libtheora --enable-
libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc
--enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-
libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-
libflite --enable-libmysofa --enable-librubberband --enable-libsoxr
--enable-chromaprint
libavutil 58. 9.100 / 58. 9.100
libavcodec 60. 14.101 / 60. 14.101
libavformat 60. 5.100 / 60. 5.100
libavdevice 60. 2.100 / 60. 2.100
libavfilter 9. 8.100 / 9. 8.100
libswscale 7. 2.100 / 7. 2.100
libswresample 4. 11.100 / 4. 11.100
libpostproc 57. 2.100 / 57. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'x.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.29.100
Duration: 00:00:50.82, start: 0.000000, bitrate: 1863 kb/s
Stream #0:0[0x1](eng): Video: h264 (High) (avc1 / 0x31637661),
yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 1729 kb/s, 25 fps, 25
tbr, 12800 tbn (default)
Metadata:
handler_name : ?Mainconcept Video Media Handler
vendor_id : [0][0][0][0]
Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : #Mainconcept MP4 Sound Media Handler
vendor_id : [0][0][0][0]
[Parsed_subtitles_0 @ 0000018b9ec8ec80] libass API version: 0x1701000
[Parsed_subtitles_0 @ 0000018b9ec8ec80] libass source: commit:
0.17.0-49-g1a599b1db748dfc07df98cd37d8603edb87da2fd
[Parsed_subtitles_0 @ 0000018b9ec8ec80] Shaper: FriBidi 1.0.13 (SIMPLE)
HarfBuzz-ng 7.3.0 (COMPLEX)
[Parsed_subtitles_0 @ 0000018b9ec8ec80] Using font provider directwrite
(with GDI)
Stream mapping:
Stream #0:0 (h264) -> subtitles:default
subtitles:default -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[Parsed_subtitles_0 @ 0000018b9ebcb340] libass API version: 0x1701000
[Parsed_subtitles_0 @ 0000018b9ebcb340] libass source: commit:
0.17.0-49-g1a599b1db748dfc07df98cd37d8603edb87da2fd
[Parsed_subtitles_0 @ 0000018b9ebcb340] Shaper: FriBidi 1.0.13 (SIMPLE)
HarfBuzz-ng 7.3.0 (COMPLEX)
[Parsed_subtitles_0 @ 0000018b9ebcb340] Using font provider directwrite
(with GDI)
[libx264 @ 0000018b9ebea9c0] using SAR=1/1
[libx264 @ 0000018b9ebea9c0] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000018b9ebea9c0] profile High, level 4.0, 4:2:0, 8-bit
[libx264 @ 0000018b9ebea9c0] 264 - core 164 r3107 a8b68eb - H.264/MPEG-4
AVC codec - Copyleft 2003-2023 - http://www.videolan.org/x264.html -
options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=2
psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0
8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=12
lookahead_threads=4 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=1 keyint=250 keyint_min=25
scenecut=40 intra_refresh=0 rc_lookahead=10 rc=crf mbtree=1 crf=25.0
qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'out.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf60.5.100
Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p(progressive),
1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 12800 tbn
Metadata:
encoder : Lavc60.14.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 128 kb/s (default)
Metadata:
handler_name : #Mainconcept MP4 Sound Media Handler
vendor_id : [0][0][0][0]
[Parsed_subtitles_0 @ 0000018b9ebcb340] fontselect: (Shonar Bangla, 400,
0) -> ShonarBangla, 0, ShonarBangla
[out#0/mp4 @ 0000018b9ec8db00] video:9863kB audio:796kB subtitle:0kB other
streams:0kB global headers:0kB muxing overhead: 0.358626%
frame= 1270 fps=109 q=-1.0 Lsize= 10697kB time=00:00:50.79
bitrate=1725.2kbits/s speed=4.37x
[libx264 @ 0000018b9ebea9c0] frame I:9 Avg QP:16.88 size: 53458
[libx264 @ 0000018b9ebea9c0] frame P:501 Avg QP:23.39 size: 15368
[libx264 @ 0000018b9ebea9c0] frame B:760 Avg QP:25.22 size: 2525
[libx264 @ 0000018b9ebea9c0] consecutive B-frames: 11.5% 23.6% 7.6% 57.3%
[libx264 @ 0000018b9ebea9c0] mb I I16..4: 47.4% 37.4% 15.2%
[libx264 @ 0000018b9ebea9c0] mb P I16..4: 7.2% 10.2% 1.1% P16..4:
13.5% 5.8% 2.5% 0.0% 0.0% skip:59.7%
[libx264 @ 0000018b9ebea9c0] mb B I16..4: 0.9% 0.7% 0.0% B16..8:
5.8% 1.6% 0.1% direct: 1.0% skip:89.8% L0:46.6% L1:42.1% BI:11.3%
[libx264 @ 0000018b9ebea9c0] 8x8 transform intra:52.4% inter:34.4%
[libx264 @ 0000018b9ebea9c0] coded y,uvDC,uvAC intra: 34.8% 25.9% 2.7%
inter: 2.3% 2.0% 0.0%
[libx264 @ 0000018b9ebea9c0] i16 v,h,dc,p: 54% 32% 9% 4%
[libx264 @ 0000018b9ebea9c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 45% 17%
3% 3% 3% 5% 2% 5%
[libx264 @ 0000018b9ebea9c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 32% 12%
4% 5% 5% 8% 4% 5%
[libx264 @ 0000018b9ebea9c0] i8c dc,h,v,p: 61% 24% 13% 2%
[libx264 @ 0000018b9ebea9c0] Weighted P-Frames: Y:5.6% UV:3.0%
[libx264 @ 0000018b9ebea9c0] kb/s:1590.47
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10384>
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