[FFmpeg-trac] #8431(undetermined:new): -frames on 2 image streams discards 1 frame
FFmpeg
trac at avcodec.org
Tue Dec 17 23:22:14 EET 2019
#8431: -frames on 2 image streams discards 1 frame
-------------------------------------+-------------------------------------
Reporter: Zenitram | Type: defect
Status: new | Priority: normal
Component: | Version: git-
undetermined | master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
With 2 image streams as input, " -frames" option (as well as " -frames:0 x
-frames:1 x", actually " -frames:1" seems to be ignored when tested)
discards 1 frame from the second (as well as third and so on) input
stream.
How to reproduce:
mkdir a
ffmpeg -f lavfi -i testsrc=duration=0.080:size=16x16 a/%1d.dpx
ffmpeg -i a/%1d.dpx -i a/%1d.dpx -map 0 -map 1 -frames 2 a.mkv
ffmpeg -i a.mkv
Expected duration of 2nd stream is 2 frames (same duration as the 1st
stream), the issue is visible by checking the DURATION line of each stream
in the final output file.
{{{
$ mkdir a
$ ffmpeg -f lavfi -i testsrc=duration=0.080:size=16x16 a/%1d.dpx
ffmpeg version git-2019-12-15-ed9279a Copyright (c) 2000-2019 the FFmpeg
developers
built with gcc 9.2.1 (GCC) 20191125
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
--enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
--enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
--enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx
--enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc
--enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
--enable-amf
libavutil 56. 36.101 / 56. 36.101
libavcodec 58. 65.100 / 58. 65.100
libavformat 58. 35.101 / 58. 35.101
libavdevice 58. 9.101 / 58. 9.101
libavfilter 7. 68.101 / 7. 68.101
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, lavfi, from 'testsrc=duration=0.080:size=16x16':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 16x16 [SAR
1:1 DAR 1:1], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> dpx (native))
Press [q] to stop, [?] for help
Output #0, image2, to 'a/%1d.dpx':
Metadata:
encoder : Lavf58.35.101
Stream #0:0: Video: dpx, rgb24, 16x16 [SAR 1:1 DAR 1:1], q=2-31, 200
kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc58.65.100 dpx
[Parsed_testsrc_0 @ 00000264833ec100] EOF timestamp not reliable
frame= 2 fps=0.0 q=-0.0 Lsize=N/A time=00:00:00.08 bitrate=N/A
speed=8.01x
video:5kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown
$ ffmpeg -i a/%1d.dpx -i a/%1d.dpx -map 0 -map 1 -frames 2 a.mkv -y
ffmpeg version git-2019-12-15-ed9279a Copyright (c) 2000-2019 the FFmpeg
developers
built with gcc 9.2.1 (GCC) 20191125
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
--enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
--enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
--enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx
--enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc
--enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
--enable-amf
libavutil 56. 36.101 / 56. 36.101
libavcodec 58. 65.100 / 58. 65.100
libavformat 58. 35.101 / 58. 35.101
libavdevice 58. 9.101 / 58. 9.101
libavfilter 7. 68.101 / 7. 68.101
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, image2, from 'a/%1d.dpx':
Duration: 00:00:00.08, start: 0.000000, bitrate: N/A
Stream #0:0: Video: dpx, rgb24, 16x16 [SAR 1:1 DAR 1:1], 25 tbr, 25
tbn, 25 tbc
Input #1, image2, from 'a/%1d.dpx':
Duration: 00:00:00.08, start: 0.000000, bitrate: N/A
Stream #1:0: Video: dpx, rgb24, 16x16 [SAR 1:1 DAR 1:1], 25 tbr, 25
tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (dpx (native) -> h264 (libx264))
Stream #1:0 -> #0:1 (dpx (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0000017d98c5c540] using SAR=1/1
[libx264 @ 0000017d98c5c540] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
[libx264 @ 0000017d98c5c540] profile High 4:4:4 Predictive, level 1.0,
4:4:4, 8-bit
[libx264 @ 0000017d98c5c540] 264 - core 158 - H.264/MPEG-4 AVC codec -
Copyleft 2003-2019 - 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=4 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
[libx264 @ 0000017d98c5e180] using SAR=1/1
[libx264 @ 0000017d98c5e180] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
[libx264 @ 0000017d98c5e180] profile High 4:4:4 Predictive, level 1.0,
4:4:4, 8-bit
[libx264 @ 0000017d98c5e180] 264 - core 158 - H.264/MPEG-4 AVC codec -
Copyleft 2003-2019 - 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=4 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, matroska, to 'a.mkv':
Metadata:
encoder : Lavf58.35.101
Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248),
yuv444p(progressive), 16x16 [SAR 1:1 DAR 1:1], q=-1--1, 25 fps, 1k tbn, 25
tbc
Metadata:
encoder : Lavc58.65.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
Stream #0:1: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 16x16
[SAR 1:1 DAR 1:1], q=-1--1, 25 fps, 1k tbn, 25 tbc
Metadata:
encoder : Lavc58.65.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
frame= 2 fps=0.0 q=28.0 Lq=28.0 size= 3kB time=00:00:00.04
bitrate= 538.0kbits/s speed=2.05x
video:2kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 59.088287%
[libx264 @ 0000017d98c5c540] frame I:1 Avg QP:34.00 size: 198
[libx264 @ 0000017d98c5c540] frame P:1 Avg QP:36.00 size: 12
[libx264 @ 0000017d98c5c540] mb I I16..4: 0.0% 0.0% 100.0%
[libx264 @ 0000017d98c5c540] 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 @ 0000017d98c5c540] 8x8 transform intra:0.0%
[libx264 @ 0000017d98c5c540] coded y,u,v intra: 100.0% 100.0% 100.0%
inter: 0.0% 0.0% 0.0%
[libx264 @ 0000017d98c5c540] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 6% 19%
6% 0% 6% 0% 12% 12%
[libx264 @ 0000017d98c5c540] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000017d98c5c540] kb/s:21.00
[libx264 @ 0000017d98c5e180] frame I:1 Avg QP:36.00 size: 175
[libx264 @ 0000017d98c5e180] mb I I16..4: 0.0% 0.0% 100.0%
[libx264 @ 0000017d98c5e180] 8x8 transform intra:0.0%
[libx264 @ 0000017d98c5e180] coded y,u,v intra: 100.0% 100.0% 100.0%
[libx264 @ 0000017d98c5e180] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 12% 25%
6% 0% 6% 0% 12% 0%
[libx264 @ 0000017d98c5e180] kb/s:35.00
$ ffmpeg -i a.mkv
ffmpeg version git-2019-12-15-ed9279a Copyright (c) 2000-2019 the FFmpeg
developers
built with gcc 9.2.1 (GCC) 20191125
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
--enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
--enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
--enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx
--enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc
--enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
--enable-amf
libavutil 56. 36.101 / 56. 36.101
libavcodec 58. 65.100 / 58. 65.100
libavformat 58. 35.101 / 58. 35.101
libavdevice 58. 9.101 / 58. 9.101
libavfilter 7. 68.101 / 7. 68.101
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, matroska,webm, from 'a.mkv':
Metadata:
ENCODER : Lavf58.35.101
Duration: 00:00:00.08, bitrate: 275 kb/s
Stream #0:0: Video: h264 (High 4:4:4 Predictive),
yuv444p(progressive), 16x16 [SAR 1:1 DAR 1:1], 25 fps, 25 tbr, 1k tbn, 50
tbc (default)
Metadata:
ENCODER : Lavc58.65.100 libx264
DURATION : 00:00:00.080000000
Stream #0:1: Video: h264 (High 4:4:4 Predictive),
yuv444p(progressive), 16x16 [SAR 1:1 DAR 1:1], 25 fps, 25 tbr, 1k tbn, 50
tbc (default)
Metadata:
ENCODER : Lavc58.65.100 libx264
DURATION : 00:00:00.040000000
At least one output file must be specified
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8431>
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