[FFmpeg-trac] #3968(undetermined:new): fieldmatch with decimate generates out-of-sync video

FFmpeg trac at avcodec.org
Mon Sep 22 17:01:06 CEST 2014


#3968: fieldmatch with decimate generates out-of-sync video
-------------------------------------+-------------------------------------
             Reporter:  myleal       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by myleal):

 Hello. I just recompiled ffmpeg, to lastest version - 2.4.1. The problem
 remains the same.

 Below follows the command line to reproduce the issue, and also the full
 uncut console output:


 C:\Temp>"c:\Program Files\ffmpeg\ffmpeg.exe" -i sample.mpg  -vf
 fieldmatch,decim
 ate output.mp4
 ffmpeg version 2.4.1 Copyright (c) 2000-2014 the FFmpeg developers
   built on Sep 22 2014 11:39:40 with gcc 4.8.2 (GCC)
   configuration: --extra-ldflags=-L/usr/local/x86_64-w64-mingw32/lib
 --prefix=/u
 sr/local/x86_64-w64-mingw32 --cross-prefix=x86_64-w64-mingw32- --target-
 os=mingw
 32 --enable-w32threads --enable-memalign-hack --arch=x86_64 --enable-
 runtime-cpu
 detect --disable-debug --enable-static --disable-shared --disable-ffplay
 --disab
 le-ffserver --enable-gpl --enable-version3 --enable-nonfree --enable-
 libmp3lame
 --enable-libfdk-aac --enable-libx264 --enable-libopenjpeg
   libavutil      54.  7.100 / 54.  7.100
   libavcodec     56.  1.100 / 56.  1.100
   libavformat    56.  4.101 / 56.  4.101
   libavdevice    56.  0.100 / 56.  0.100
   libavfilter     5.  1.100 /  5.  1.100
   libswscale      3.  0.100 /  3.  0.100
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  0.100 / 53.  0.100
 Input #0, mpeg, from 'sample.mpg':
   Duration: 00:02:00.14, start: 0.600000, bitrate: 6080 kb/s
     Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x480
 [SAR 8:9
 DAR 4:3], max. 8801 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
     Stream #0:1[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s
 File 'output.mp4' already exists. Overwrite ? [y/N] y
 No pixel format specified, yuv420p10le for H.264 encoding chosen.
 Use -pix_fmt yuv420p for compatibility with outdated media players.
 [libx264 @ 00000000046e6140] using SAR=8/9
 [libx264 @ 00000000046e6140] using cpu capabilities: MMX2 SSE2Fast LZCNT
 [libx264 @ 00000000046e6140] profile High 10, level 3.0, 4:2:0 10-bit
 [libx264 @ 00000000046e6140] 264 - core 142 - H.264/MPEG-4 AVC codec -
 Copyleft
 2003-2014 - 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_rang
 e=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1
 chroma_qp_
 offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1
 interla
 ced=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=23
 scenecut=40
 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60
 qpmin=0 qpma
 x=81 qpstep=4 ip_ratio=1.40 aq=1:1.00
 Output #0, mp4, to 'output.mp4':
   Metadata:
     encoder         : Lavf56.4.101
     Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021),
 yuv420p10le, 72
 0x480 [SAR 8:9 DAR 4:3], q=-1--1, 23.98 fps, 24k tbn, 23.98 tbc
     Metadata:
       encoder         : Lavc56.1.100 libx264
     Stream #0:1: Audio: aac (libfdk_aac) ([64][0][0][0] / 0x0040), 48000
 Hz, 5.1
 , s16, 488 kb/s
     Metadata:
       encoder         : Lavc56.1.100 libfdk_aac
 Stream mapping:
   Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
   Stream #0:1 -> #0:1 (ac3 (native) -> aac (libfdk_aac))
 Press [q] to stop, [?] for help
 frame=   48 fps=0.0 q=40.0 size=       1kB time=00:00:01.68 bitrate=
 4.0kbits/
 frame=   76 fps= 75 q=40.0 size=      74kB time=00:00:02.77 bitrate=
 217.1kbits/
 frame=   92 fps= 61 q=40.0 size=     161kB time=00:00:03.56 bitrate=
 370.0kbits/
 frame=  108 fps= 54 q=40.0 size=     255kB time=00:00:04.11 bitrate=
 506.5kbits/
 frame=  128 fps= 50 q=40.0 size=     351kB time=00:00:04.95 bitrate=
 581.0kbits/
 frame=  144 fps= 47 q=40.0 size=     444kB time=00:00:05.61 bitrate=
 648.6kbits/
 frame=  160 fps= 44 q=40.0 size=     546kB time=00:00:06.42 bitrate=
 696.2kbits/
 frame=  180 fps= 43 q=40.0 size=     661kB time=00:00:07.14 bitrate=
 757.8kbits/
 frame=  200 fps= 42 q=40.0 size=     787kB time=00:00:07.91 bitrate=
 814.6kbits/
 frame=  216 fps= 41 q=40.0 size=     894kB time=00:00:08.59 bitrate=
 851.4kbits/
 frame=  232 fps= 40 q=40.0 size=     993kB time=00:00:09.38 bitrate=
 866.7kbits/
 frame=  248 fps= 40 q=40.0 size=    1091kB time=00:00:09.94 bitrate=
 899.0kbits/
 frame=  260 fps= 38 q=40.0 size=    1157kB time=00:00:10.51 bitrate=
 901.4kbits/
 frame=  272 fps= 37 q=40.0 size=    1218kB time=00:00:10.86 bitrate=
 918.4kbits/
 frame=  288 fps= 37 q=40.0 size=    1293kB time=00:00:11.62 bitrate=
 911.2kbits/
 frame=  308 fps= 37 q=40.0 size=    1382kB time=00:00:12.37 bitrate=
 914.6kbits/
 frame=  324 fps= 37 q=40.0 size=    1457kB time=00:00:13.10 bitrate=
 911.1kbits/
 frame=  340 fps= 37 q=40.0 size=    1553kB time=00:00:13.74 bitrate=
 925.6kbits/
 frame=  360 fps= 36 q=40.0 size=    1652kB time=00:00:14.55 bitrate=
 930.0kbits/
 frame=  376 fps= 36 q=40.0 size=    1728kB time=00:00:15.25 bitrate=
 927.8kbits/
 frame=  396 fps= 36 q=40.0 size=    1826kB time=00:00:16.04 bitrate=
 932.5kbits/
 frame=  416 fps= 36 q=40.0 size=    1918kB time=00:00:16.91 bitrate=
 928.7kbits/
 frame=  436 fps= 36 q=40.0 size=    2008kB time=00:00:17.75 bitrate=
 926.7kbits/
 frame=  460 fps= 37 q=40.0 size=    2104kB time=00:00:18.77 bitrate=
 917.9kbits/
 frame=  484 fps= 37 q=40.0 size=    2191kB time=00:00:19.73 bitrate=
 909.4kbits/
 frame=  504 fps= 37 q=40.0 size=    2263kB time=00:00:20.56 bitrate=
 901.3kbits/
 frame=  528 fps= 38 q=40.0 size=    2349kB time=00:00:21.29 bitrate=
 903.8kbits/
 frame=  552 fps= 38 q=40.0 size=    2433kB time=00:00:22.25 bitrate=
 895.8kbits/
 frame=  568 fps= 38 q=40.0 size=    2501kB time=00:00:23.31 bitrate=
 878.4kbits/
 frame=  596 fps= 38 q=40.0 size=    2591kB time=00:00:25.06 bitrate=
 846.6kbits/
 frame=  632 fps= 39 q=40.0 size=    2681kB time=00:00:27.30 bitrate=
 804.2kbits/
 frame=  664 fps= 40 q=40.0 size=    2763kB time=00:00:29.48 bitrate=
 767.7kbits/
 frame=  688 fps= 40 q=40.0 size=    2831kB time=00:00:30.87 bitrate=
 751.2kbits/
 frame=  708 fps= 40 q=40.0 size=    2896kB time=00:00:32.04 bitrate=
 740.5kbits/
 frame=  720 fps= 40 q=40.0 size=    2955kB time=00:00:32.59 bitrate=
 742.5kbits/
 frame=  732 fps= 39 q=40.0 size=    3029kB time=00:00:33.26 bitrate=
 746.0kbits/
 frame=  744 fps= 39 q=40.0 size=    3119kB time=00:00:33.87 bitrate=
 754.1kbits/
 frame=  760 fps= 39 q=40.0 size=    3255kB time=00:00:34.66 bitrate=
 769.2kbits/
 frame=  772 fps= 38 q=40.0 size=    3354kB time=00:00:35.30 bitrate=
 778.1kbits/
 frame=  784 fps= 38 q=40.0 size=    3457kB time=00:00:35.99 bitrate=
 786.8kbits/
 frame=  796 fps= 37 q=40.0 size=    3562kB time=00:00:36.52 bitrate=
 798.9kbits/
 frame=  800 fps= 36 q=40.0 size=    3597kB time=00:00:36.75 bitrate=
 801.6kbits/
 frame=  808 fps= 36 q=40.0 size=    3667kB time=00:00:37.16 bitrate=
 808.2kbits/
 frame=  820 fps= 35 q=40.0 size=    3776kB time=00:00:37.80 bitrate=
 818.1kbits/
 frame=  832 fps= 35 q=40.0 size=    3885kB time=00:00:38.42 bitrate=
 828.3kbits/
 frame=  844 fps= 34 q=40.0 size=    4012kB time=00:00:39.14 bitrate=
 839.5kbits/
 frame=  856 fps= 34 q=40.0 size=    4135kB time=00:00:39.66 bitrate=
 854.1kbits/
 frame=  868 fps= 34 q=40.0 size=    4259kB time=00:00:40.34 bitrate=
 864.8kbits/
 frame=  880 fps= 34 q=40.0 size=    4393kB time=00:00:40.91 bitrate=
 879.4kbits/
 frame=  892 fps= 33 q=40.0 size=    4532kB time=00:00:41.51 bitrate=
 894.3kbits/
 frame=  904 fps= 33 q=40.0 size=    4664kB time=00:00:42.15 bitrate=
 906.4kbits/
 frame=  916 fps= 33 q=40.0 size=    4804kB time=00:00:42.86 bitrate=
 918.2kbits/
 frame=  928 fps= 33 q=40.0 size=    4942kB time=00:00:43.41 bitrate=
 932.5kbits/
 frame=  940 fps= 33 q=40.0 size=    5080kB time=00:00:44.11 bitrate=
 943.3kbits/
 frame=  952 fps= 33 q=40.0 size=    5221kB time=00:00:44.82 bitrate=
 954.3kbits/
 frame=  964 fps= 32 q=40.0 size=    5362kB time=00:00:45.42 bitrate=
 967.1kbits/
 frame=  980 fps= 32 q=40.0 size=    5553kB time=00:00:46.12 bitrate=
 986.3kbits/
 frame=  992 fps= 32 q=40.0 size=    5694kB time=00:00:46.76 bitrate=
 997.5kbits/
 frame= 1004 fps= 32 q=40.0 size=    5840kB time=00:00:47.40
 bitrate=1009.2kbits/
 frame= 1016 fps= 32 q=40.0 size=    5988kB time=00:00:48.04
 bitrate=1021.1kbits/
 frame= 1028 fps= 32 q=40.0 size=    6135kB time=00:00:48.62
 bitrate=1033.7kbits/
 frame= 1040 fps= 31 q=40.0 size=    6286kB time=00:00:49.26
 bitrate=1045.3kbits/
 frame= 1052 fps= 31 q=40.0 size=    6438kB time=00:00:50.07
 bitrate=1053.3kbits/
 frame= 1064 fps= 31 q=40.0 size=    6613kB time=00:00:50.66
 bitrate=1069.2kbits/
 frame= 1076 fps= 31 q=40.0 size=    6785kB time=00:00:51.11
 bitrate=1087.3kbits/
 frame= 1088 fps= 31 q=40.0 size=    6961kB time=00:00:51.75
 bitrate=1101.8kbits/
 frame= 1100 fps= 31 q=40.0 size=    7146kB time=00:00:52.39
 bitrate=1117.2kbits/
 frame= 1112 fps= 30 q=40.0 size=    7323kB time=00:00:53.03
 bitrate=1131.1kbits/
 frame= 1124 fps= 30 q=40.0 size=    7479kB time=00:00:53.61
 bitrate=1142.7kbits/
 frame= 1136 fps= 30 q=40.0 size=    7641kB time=00:00:54.35
 bitrate=1151.5kbits/
 frame= 1148 fps= 30 q=40.0 size=    7810kB time=00:00:54.89
 bitrate=1165.6kbits/
 frame= 1160 fps= 30 q=40.0 size=    7978kB time=00:00:55.53
 bitrate=1177.0kbits/
 frame= 1172 fps= 30 q=40.0 size=    8141kB time=00:00:56.17
 bitrate=1187.2kbits/
 frame= 1184 fps= 30 q=40.0 size=    8311kB time=00:00:56.79
 bitrate=1198.9kbits/
 frame= 1196 fps= 30 q=40.0 size=    8483kB time=00:00:57.43
 bitrate=1210.0kbits/
 frame= 1208 fps= 30 q=40.0 size=    8662kB time=00:00:58.02
 bitrate=1222.9kbits/
 frame= 1220 fps= 30 q=40.0 size=    8845kB time=00:00:58.60
 bitrate=1236.5kbits/
 frame= 1232 fps= 29 q=40.0 size=    9057kB time=00:00:59.24
 bitrate=1252.4kbits/
 frame= 1244 fps= 29 q=40.0 size=    9280kB time=00:00:59.88
 bitrate=1269.5kbits/
 frame= 1256 fps= 29 q=40.0 size=    9500kB time=00:01:00.52
 bitrate=1285.8kbits/
 frame= 1268 fps= 29 q=40.0 size=    9706kB time=00:01:01.10
 bitrate=1301.3kbits/
 frame= 1280 fps= 29 q=40.0 size=    9882kB time=00:01:01.74
 bitrate=1311.2kbits/
 frame= 1292 fps= 29 q=40.0 size=   10050kB time=00:01:02.38
 bitrate=1319.9kbits/
 frame= 1304 fps= 29 q=40.0 size=   10217kB time=00:01:03.02
 bitrate=1328.1kbits/
 frame= 1320 fps= 29 q=40.0 size=   10438kB time=00:01:03.83
 bitrate=1339.6kbits/
 frame= 1332 fps= 29 q=40.0 size=   10611kB time=00:01:04.47
 bitrate=1348.3kbits/
 frame= 1344 fps= 29 q=40.0 size=   10779kB time=00:01:04.98
 bitrate=1358.8kbits/
 frame= 1356 fps= 28 q=40.0 size=   10945kB time=00:01:05.64
 bitrate=1365.9kbits/
 frame= 1368 fps= 28 q=40.0 size=   11097kB time=00:01:06.26
 bitrate=1371.9kbits/
 frame= 1380 fps= 28 q=40.0 size=   11256kB time=00:01:06.90
 bitrate=1378.3kbits/
 frame= 1396 fps= 28 q=40.0 size=   11419kB time=00:01:07.75
 bitrate=1380.6kbits/
 frame= 1412 fps= 28 q=40.0 size=   11565kB time=00:01:08.52
 bitrate=1382.6kbits/
 frame= 1428 fps= 28 q=40.0 size=   11731kB time=00:01:09.35
 bitrate=1385.6kbits/
 frame= 1444 fps= 28 q=40.0 size=   11898kB time=00:01:10.25
 bitrate=1387.4kbits/
 frame= 1460 fps= 28 q=40.0 size=   12051kB time=00:01:11.08
 bitrate=1388.8kbits/
 frame= 1476 fps= 28 q=40.0 size=   12195kB time=00:01:11.85
 bitrate=1390.4kbits/
 frame= 1492 fps= 28 q=40.0 size=   12345kB time=00:01:12.74
 bitrate=1390.1kbits/
 frame= 1508 fps= 28 q=40.0 size=   12505kB time=00:01:13.55
 bitrate=1392.6kbits/
 frame= 1524 fps= 28 q=40.0 size=   12660kB time=00:01:14.45
 bitrate=1392.9kbits/
 frame= 1544 fps= 29 q=40.0 size=   12834kB time=00:01:15.41
 bitrate=1394.1kbits/
 frame= 1560 fps= 29 q=40.0 size=   12973kB time=00:01:16.31
 bitrate=1392.7kbits/
 frame= 1580 fps= 29 q=40.0 size=   13127kB time=00:01:17.14
 bitrate=1394.0kbits/
 frame= 1596 fps= 29 q=40.0 size=   13259kB time=00:01:17.97
 bitrate=1393.0kbits/
 frame= 1616 fps= 29 q=40.0 size=   13385kB time=00:01:18.89
 bitrate=1389.8kbits/
 frame= 1636 fps= 29 q=40.0 size=   13515kB time=00:01:20.30
 bitrate=1378.8kbits/
 frame= 1660 fps= 29 q=40.0 size=   13640kB time=00:01:21.68
 bitrate=1367.9kbits/
 frame= 1684 fps= 29 q=40.0 size=   13748kB time=00:01:23.28
 bitrate=1352.2kbits/
 frame= 1712 fps= 29 q=40.0 size=   13857kB time=00:01:24.90
 bitrate=1336.9kbits/
 frame= 1736 fps= 30 q=40.0 size=   13962kB time=00:01:26.50
 bitrate=1322.1kbits/
 frame= 1760 fps= 30 q=40.0 size=   14045kB time=00:01:27.72
 bitrate=1311.5kbits/
 frame= 1784 fps= 30 q=40.0 size=   14140kB time=00:01:29.04
 bitrate=1300.8kbits/
 frame= 1804 fps= 30 q=40.0 size=   14219kB time=00:01:30.13
 bitrate=1292.3kbits/
 frame= 1824 fps= 30 q=40.0 size=   14309kB time=00:01:31.18
 bitrate=1285.6kbits/
 frame= 1844 fps= 30 q=40.0 size=   14411kB time=00:01:32.18
 bitrate=1280.7kbits/
 frame= 1860 fps= 30 q=40.0 size=   14514kB time=00:01:33.10
 bitrate=1277.1kbits/
 frame= 1880 fps= 30 q=40.0 size=   14608kB time=00:01:34.03
 bitrate=1272.6kbits/
 frame= 1900 fps= 30 q=40.0 size=   14701kB time=00:01:35.08
 bitrate=1266.6kbits/
 frame= 1920 fps= 30 q=40.0 size=   14791kB time=00:01:36.23
 bitrate=1259.0kbits/
 frame= 1944 fps= 30 q=40.0 size=   14877kB time=00:01:37.38
 bitrate=1251.4kbits/
 frame= 1968 fps= 30 q=40.0 size=   14962kB time=00:01:38.58
 bitrate=1243.3kbits/
 frame= 1992 fps= 31 q=40.0 size=   15053kB time=00:01:39.86
 bitrate=1234.8kbits/
 frame= 2016 fps= 31 q=40.0 size=   15143kB time=00:01:41.14
 bitrate=1226.5kbits/
 frame= 2040 fps= 31 q=40.0 size=   15242kB time=00:01:42.57
 bitrate=1217.3kbits/
 frame= 2064 fps= 31 q=40.0 size=   15335kB time=00:01:43.91
 bitrate=1208.9kbits/
 frame= 2088 fps= 31 q=40.0 size=   15437kB time=00:01:45.43
 bitrate=1199.4kbits/
 frame= 2116 fps= 31 q=40.0 size=   15549kB time=00:01:47.15
 bitrate=1188.7kbits/
 frame= 2144 fps= 31 q=40.0 size=   15662kB time=00:01:48.84
 bitrate=1178.7kbits/
 frame= 2168 fps= 32 q=40.0 size=   15767kB time=00:01:50.42
 bitrate=1169.7kbits/
 frame= 2196 fps= 32 q=40.0 size=   15861kB time=00:01:51.85
 bitrate=1161.7kbits/
 frame= 2220 fps= 32 q=40.0 size=   15969kB time=00:01:53.26
 bitrate=1155.0kbits/
 frame= 2244 fps= 32 q=40.0 size=   16061kB time=00:01:54.39
 bitrate=1150.2kbits/
 frame= 2268 fps= 32 q=40.0 size=   16171kB time=00:01:55.79
 bitrate=1144.0kbits/
 frame= 2288 fps= 32 q=40.0 size=   16254kB time=00:01:56.88
 bitrate=1139.1kbits/
 frame= 2308 fps= 32 q=40.0 size=   16340kB time=00:01:58.03
 bitrate=1134.0kbits/
 frame= 2324 fps= 32 q=40.0 size=   16555kB time=00:01:58.67
 bitrate=1142.8kbits/
 frame= 2340 fps= 32 q=40.0 size=   16751kB time=00:01:59.27
 bitrate=1150.5kbits/
 frame= 2348 fps= 32 q=-1.0 Lsize=   17771kB time=00:02:00.00
 bitrate=1213.2kbits
 /s
 video:10546kB audio:7162kB subtitle:0kB other streams:0kB global
 headers:0kB mux
 ing overhead: 0.357373%
 [libx264 @ 00000000046e6140] frame I:25    Avg QP:23.87  size:  9387
 [libx264 @ 00000000046e6140] frame P:1406  Avg QP:29.97  size:  5476
 [libx264 @ 00000000046e6140] frame B:917   Avg QP:32.93  size:  3124
 [libx264 @ 00000000046e6140] consecutive B-frames: 25.2% 68.1%  0.3%  6.5%
 [libx264 @ 00000000046e6140] mb I  I16..4: 67.2% 29.0%  3.8%
 [libx264 @ 00000000046e6140] mb P  I16..4:  2.6%  5.8%  0.3%  P16..4:
 21.6%  8.3
 %  4.2%  0.0%  0.0%    skip:57.1%
 [libx264 @ 00000000046e6140] mb B  I16..4:  0.2%  1.9%  0.0%  B16..8:
 20.3%  3.5
 %  1.1%  direct: 2.7%  skip:70.2%  L0:39.0% L1:52.2% BI: 8.8%
 [libx264 @ 00000000046e6140] 8x8 transform intra:63.2% inter:72.2%
 [libx264 @ 00000000046e6140] coded y,uvDC,uvAC intra: 51.5% 37.8% 13.1%
 inter: 1
 4.9% 11.6% 1.2%
 [libx264 @ 00000000046e6140] i16 v,h,dc,p: 65% 21%  5%  9%
 [libx264 @ 00000000046e6140] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  8% 15% 38%
 5%  6%
  6%  7%  5%  9%
 [libx264 @ 00000000046e6140] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 28% 20%
 6%  8%
  5%  9%  4%  8%
 [libx264 @ 00000000046e6140] i8c dc,h,v,p: 66% 19% 10%  5%
 [libx264 @ 00000000046e6140] Weighted P-Frames: Y:15.6% UV:8.4%
 [libx264 @ 00000000046e6140] ref P L0: 76.8% 14.1%  8.4%  0.7%
 [libx264 @ 00000000046e6140] ref B L0: 82.6% 17.4%  0.0%
 [libx264 @ 00000000046e6140] ref B L1: 100.0%  0.0%
 [libx264 @ 00000000046e6140] kb/s:882.14

 C:\Temp>

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3968#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


More information about the FFmpeg-trac mailing list