[FFmpeg-trac] #8857(undetermined:new): ffmpeg h264_qsv force_key_frames incorret
FFmpeg
trac at avcodec.org
Tue Aug 25 11:30:31 EEST 2020
#8857: ffmpeg h264_qsv force_key_frames incorret
-------------------------------------+-------------------------------------
Reporter: mikejson | Owner:
Type: defect | Status: new
Priority: normal | Component:
| undetermined
Version: git-master | Resolution:
Keywords: h264_qsv | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by mikejson):
$ ./ffmpeg.exe -c:v mjpeg_qsv -rtbufsize 2000M -s 2560*1440 -f dshow -i
video="Smart Camera" -vcodec h264_qsv -b:v 6000k -r 30 -preset veryfast
-tune:v zerolatency -force_key_frames expr:gte\(t,n_forced*5\) -g 30*10
iii.h264
ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 10.2.1 (GCC) 20200726
configuration: --disable-static --enable-shared --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-libsrt --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-libvmaf --enable-libvorbis
--enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-
libxvid --enable-libaom --enable-libgsm --disable-w32threads --enable-
libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-
d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
--enable-libopenmpt --enable-amf
libavutil 56. 51.100 / 56. 51.100
libavcodec 58. 91.100 / 58. 91.100
libavformat 58. 45.100 / 58. 45.100
libavdevice 58. 10.100 / 58. 10.100
libavfilter 7. 85.100 / 7. 85.100
libswscale 5. 7.100 / 5. 7.100
libswresample 3. 7.100 / 3. 7.100
libpostproc 55. 7.100 / 55. 7.100
[mjpeg @ 00a44500] EOI missing, emulating
Input #0, dshow, from 'video=Smart Camera':
Duration: N/A, start: 22972.029000, bitrate: N/A
Stream #0:0: Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj420p(pc,
bt470bg/unknown/unknown), 2560x1440 [SAR 96:96 DAR 16:9], 30 fps, 30 tbr,
10000k tbn, 10000k tbc
Codec AVOption tune (The metric that the encoder tunes for. Automatically
chosen by the encoder by default) specified for output file #0 (iii.h264)
has not been used for any stream. The most likely reason is either wrong
type (e.g. a video option with no video streams) or that it is a private
option of some encoder which was not actually used for any stream.
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (mjpeg_qsv) -> h264 (h264_qsv))
Press [q] to stop, [?] for help
Output #0, h264, to 'iii.h264':
Metadata:
encoder : Lavf58.45.100
Stream #0:0: Video: h264 (h264_qsv), nv12, 2560x1440 [SAR 96:96 DAR
16:9], q=-1--1, 6000 kb/s, 30 fps, 30 tbn, 30 tbc
Metadata:
encoder : Lavc58.91.100 h264_qsv
Side data:
cpb: bitrate max/min/avg: 0/0/6000000 buffer size: 0 vbv_delay: N/A
frame= 1060 fps= 30 q=51.0 size= 26112kB time=00:00:35.03
bitrate=6105.9kbits/s dup=22 drop=0 speed=0.99x
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8857#comment:2>
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