[FFmpeg-trac] #11336(ffmpeg:new): Pipe output produces file with incorrect duration metadata
FFmpeg
trac at avcodec.org
Sat Dec 7 04:10:36 EET 2024
#11336: Pipe output produces file with incorrect duration metadata
--------------------------------+--------------------------------------
Reporter: Xorgon | Type: defect
Status: new | Priority: normal
Component: ffmpeg | Version: git-master
Keywords: pipe | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
--------------------------------+--------------------------------------
Summary of the bug:
Using the pipe output from ffmpeg results in the duration in the metadata
being incorrect.
How to reproduce:
{{{
% ffmpeg -y -i .\test.mp4 -f avi -c:v libx264 - > output.avi
ffmpeg version 2024-12-04-git-2f95bc3cb3-full_build-www.gyan.dev Copyright
(c) 2000-2024 the FFmpeg developers
built with gcc 14.2.0 (Rev1, 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-libopenjpeg --enable-libquirc
--enable-libuavs3d --enable-libxevd --enable-libzvbi --enable-libqrencode
--enable-librav1e --enable-libsvtav1 --enable-libvvenc --enable-libwebp
--enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxeve
--enable-libxvid --enable-libaom --enable-libjxl --enable-libvpx --enable-
mediafoundation --enable-libass --enable-frei0r --enable-libfreetype
--enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-
libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-
llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va
--enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-
vaapi --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-liblc3
--enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-
libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-
libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
libavutil 59. 47.101 / 59. 47.101
libavcodec 61. 26.100 / 61. 26.100
libavformat 61. 9.100 / 61. 9.100
libavdevice 61. 4.100 / 61. 4.100
libavfilter 10. 6.101 / 10. 6.101
libswscale 8. 12.100 / 8. 12.100
libswresample 5. 4.100 / 5. 4.100
libpostproc 58. 4.100 / 58. 4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\porous_plates_high_angle.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2022-08-10T12:54:09.000000Z
Duration: 00:00:06.67, start: 0.000000, bitrate: 567 kb/s
Stream #0:0[0x1](eng): Video: h264 (High) (avc1 / 0x31637661),
yuv420p(progressive), 384x264 [SAR 1:1 DAR 16:11], 563 kb/s, 30 fps, 30
tbr, 30k tbn (default)
Metadata:
creation_time : 2022-08-10T12:54:09.000000Z
handler_name : Mainconcept MP4 Video Media Handler
vendor_id : [0][0][0][0]
encoder : AVC Coding
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 00000190e94bb600] using SAR=1/1
[libx264 @ 00000190e94bb600] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 00000190e94bb600] profile High, level 2.1, 4:2:0, 8-bit
Output #0, avi, to 'pipe:':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
ISFT : Lavf61.9.100
Stream #0:0(eng): Video: h264 (H264 / 0x34363248), yuv420p(tv,
progressive), 384x264 [SAR 1:1 DAR 16:11], q=2-31, 30 fps, 30 tbn
(default)
Metadata:
encoder : Lavc61.26.100 libx264
creation_time : 2022-08-10T12:54:09.000000Z
handler_name : Mainconcept MP4 Video Media Handler
vendor_id : [0][0][0][0]
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
[out#0/avi @ 00000190e94ba780] video:82KiB audio:0KiB subtitle:0KiB other
streams:0KiB global headers:0KiB muxing overhead: 3.631060%
frame= 200 fps=0.0 q=-1.0 Lsize= 85KiB time=00:00:06.60 bitrate=
105.9kbits/s speed=66.6x
[libx264 @ 00000190e94bb600] frame I:1 Avg QP:16.12 size: 3659
[libx264 @ 00000190e94bb600] frame P:80 Avg QP:21.31 size: 647
[libx264 @ 00000190e94bb600] frame B:119 Avg QP:26.74 size: 243
[libx264 @ 00000190e94bb600] consecutive B-frames: 3.0% 53.0% 0.0% 44.0%
[libx264 @ 00000190e94bb600] mb I I16..4: 17.6% 70.6% 11.8%
[libx264 @ 00000190e94bb600] mb P I16..4: 0.8% 1.7% 0.6% P16..4:
17.6% 4.6% 3.3% 0.0% 0.0% skip:71.4%
[libx264 @ 00000190e94bb600] mb B I16..4: 0.1% 0.3% 0.2% B16..8:
11.7% 1.4% 0.4% direct: 0.6% skip:85.4% L0:32.0% L1:59.7% BI: 8.3%
[libx264 @ 00000190e94bb600] 8x8 transform intra:59.6% inter:62.4%
[libx264 @ 00000190e94bb600] coded y,uvDC,uvAC intra: 48.5% 0.0% 0.0%
inter: 3.5% 0.0% 0.0%
[libx264 @ 00000190e94bb600] i16 v,h,dc,p: 19% 39% 25% 17%
[libx264 @ 00000190e94bb600] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 25% 30%
3% 3% 4% 4% 4% 5%
[libx264 @ 00000190e94bb600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 20% 16%
6% 8% 8% 8% 5% 6%
[libx264 @ 00000190e94bb600] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 00000190e94bb600] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 00000190e94bb600] ref P L0: 76.2% 7.9% 11.2% 4.7%
[libx264 @ 00000190e94bb600] ref B L0: 85.6% 12.9% 1.5%
[libx264 @ 00000190e94bb600] ref B L1: 97.7% 2.3%
[libx264 @ 00000190e94bb600] kb/s:101.19
}}}
Using ffprobe we can see that the duration does not match the counted
number of frames and the frame rate.
{{{
% ffprobe -v error -count_frames -show_entries
stream=duration,nb_read_frames,r_frame_rate .\output.avi
[STREAM]
r_frame_rate=30/1
duration=728.233333
nb_read_frames=200
[/STREAM]
}}}
Full debug output log and test videos are attached.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11336>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list