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• Non-monotonous DTS in output stream previous current changing to This may result in incorrect timestamps in the output file

  21 juillet 2020, par Vitalis Hommel

  I am having a file.txt with rather close snippets

  


  file 'input.mp4'
inpoint 1.5402465510368346
outpoint 2.722609395980835
file 'input.mp4'
inpoint 3.192511146068573
outpoint 7.074568028450012
file 'input.mp4'
inpoint 7.851800565719604
outpoint 9.023683423995971
file 'input.mp4'
inpoint 10.054571752548219
outpoint 12.008032734394073
file 'input.mp4'
inpoint 18.70977670431137
outpoint 21.20993923664093
file 'input.mp4'
inpoint 24.51183382153511
outpoint 26.465287650823594
...


  


  I concat them with

  


  ffmpeg -safe 0 -f concat -i file.txt out.mp4


  


  and I tried

  


  ffmpeg -use_wallclock_as_timestamps 1 -safe 0 -f concat -i file.txt out.mp4


  


  Yet I get

  


  [mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 2069, current: 2067; changing to 2070. This may result in incorrect timestamps in the output file.
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 2070, current: 2067; changing to 2071. This may result in incorrect timestamps in the output file.
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 2071, current: 2067; changing to 2072. This may result in incorrect timestamps in the output file.
[aac @ 00000178c50f8a80] Queue input is backward in time
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 2758, current: 2756; changing to 2759. This may result in incorrect timestamps in the output file.
[aac @ 00000178c50f8a80] Queue input is backward in time
    Last message repeated 5 times
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 7581, current: 7579; changing to 7582. This may result in incorrect timestamps in the output file.
[aac @ 00000178c50f8a80] Queue input is backward in time
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 7582, current: 7579; changing to 7583. This may result in incorrect timestamps in the output file.
[aac @ 00000178c50f8a80] Queue input is backward in time
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 7583, current: 7579; changing to 7584. This may result in incorrect timestamps in the output file.
[aac @ 00000178c50f8a80] Queue input is backward in time
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 7584, current: 7579; changing to 7585. This may result in incorrect timestamps in the output file.
[aac @ 00000178c50f8a80] Queue input is backward in time
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 7585, current: 7579; changing to 7586. This may result in incorrect timestamps in the output file.
[aac @ 00000178c50f8a80] Queue input is backward in time
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 7586, current: 7579; changing to 7587. This may result in incorrect timestamps in the output file.
[aac @ 00000178c50f8a80] Queue input is backward in time
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 7587, current: 7579; changing to 7588. This may result in incorrect timestamps in the output file.
[aac @ 00000178c50f8a80] Queue input is backward in time
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 7588, current: 7579; changing to 7589. This may result in incorrect timestamps in the output file.
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 7589, current: 7579; changing to 7590. This may result in incorrect timestamps in the output file.
[aac @ 00000178c50f8a80] Queue input is backward in time
[mp4 @ 00000178c514cc00] Non-monotonous DTS in output stream 0:1; previous: 7590, current: 7579; changing to 7591. This may result in incorrect timestamps in the output file.
[aac @ 00000178c50f8a80] Queue input is backward in time


  


  And the final file is cut at wrong places.

  


  How to make the file.txt work ?

  


• Using 'overlay_cuda' in ffmpeg with transparency in input frames

  16 mai 2023, par time4tea

  I'm trying to overlay a full frame image on top of an MP4, in ffmpeg, using as much hardware-assistance as possible.

  


  This is for https://github.com/time4tea/gopro-dashboard-overlay

  


  I have the non-GPU overlay working totally fine, and would like to take advantage of the GPU now.

  


  The inputs to ffmpeg are :

  


  

  • a stream from an MP4 file - with 1 audio and 1 video stream

  


  • frames from the dashboard software, which are supplied as raw RGBA frames, at the same frame size as the movie.

  


  


  I've managed to get the overlay sort of working using the nvidia extensions, but it doesn't work as it uses nv12 frame formats which don't have any idea of transparency (AFAIK) so the overlaid frame completely obscures the movie frame - makes sense.

  


  The incantation that does this is (put on separate lines to try to keep the different sections - inputs / transforms / outputs - obvious) :

  


  ffmpeg -y -report -hide_banner -loglevel info 
-hwaccel cuda -hwaccel_output_format cuda 
-i movie.mp4 
-f rawvideo -framerate 10.0 -s 1024x576 -pix_fmt rgba -i - 
-filter_complex [0:v]null[mp4_stream];[1:v]format=nv12,hwupload_cuda[overlay_stream];[mp4_stream][overlay_stream]overlay_cuda,hwdownload,format=nv12 
-vcodec h264_nvenc 
-rc:v cbr -b:v 20M -bf:v 3 -profile:v high -spatial-aq true 
-movflags faststart 
output.mp4


  


  When i try to use yuva420p (which I believe is the correct format, but happy to be corrected) - in all various different places, for example :

  


  ffmpeg -y -report -hide_banner -loglevel info 
-hwaccel cuda -hwaccel_output_format yuva420p 
-i movie.mp4 
-f rawvideo -framerate 10.0 -s 1024x576 -pix_fmt rgba -i - 
-filter_complex [0:v]null[mp4_stream];[1:v]format=yuva420p,hwupload_cuda[overlay_stream];[mp4_stream][overlay_stream]overlay_cuda,hwdownload,format=yuva420p -vcodec h264_nvenc 
-rc:v cbr -b:v 20M -bf:v 3 -profile:v high -spatial-aq true -movflags faststart output.mp4



  


  I get flavours of the same error message :

  


  Impossible to convert between the formats supported by the filter 'Parsed_null_0' and the filter 'auto_scaler_1'

  


  AIUI - auto scalers are inserted into the pipeline when things don't match resolutions or formats - but here everything should match ?

  


  Using a filter_complex of [1:v]format=yuva420p,hwupload_cuda[overlay_stream];[0:v][overlay_stream]overlay_cuda,hwdownload,format=yuva420p i.e not using a null filter, which I put in just to make quickly changing filters easy, has the same error.

  


  Impossible to convert between the formats supported by the filter 'graph 0 input from stream 0:0' and the filter 'auto_scaler_1'

  


  I have looked at the suggested similar questions, and they don't appear to solve the problem for me.

  


  Thanks for any suggestions !

  


• ffmpeg with libopenh264 to get profile high422

  24 juillet 2023, par Андрей Тернити

  I have raw MJPEG video file. 3840x2160, 25fps, YUYV 4:2:2. I want use ffmpeg with encoder libopenh264. Why I can't use profile high422 ?

  


  ffmpeg -framerate 25 -i inFile.yuvj422p -profile:v high422 -c:v libopenh264 -q 2 -b 2500000 -allow_skip_frames 1 -maxrate 3500000 outFile.mkv


  


  Log

  


  ...
[libopenh264enc @ 0x56077580ed80] [Eval @ 0x7ffe78457230] Undefined constant or missing '(' in 'high422'


  


  Let's know encoder's capability

  


  # ffmpeg -h encoder=libopenh264&#xA;Encoder libopenh264 [OpenH264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10]:&#xA;    General capabilities: threads &#xA;    Threading capabilities: other&#xA;    Supported pixel formats: yuv420p&#xA;libopenh264enc AVOptions:&#xA;  -slice_mode        <int>        E..V......P set slice mode, use slices/max_nal_size (from 0 to 4) (default fixed)&#xA;     fixed           1            E..V....... a fixed number of slices&#xA;     dyn             3            E..V....... Size limited (compatibility name)&#xA;     sizelimited     3            E..V....... Size limited&#xA;  -loopfilter        <int>        E..V....... enable loop filter (from 0 to 1) (default 1)&#xA;  -profile           <int>        E..V....... set profile restrictions (from -99 to 65535) (default -99)&#xA;     constrained_baseline 578          E..V.......&#xA;     main            77           E..V.......&#xA;     high            100          E..V.......&#xA;  -max_nal_size      <int>        E..V....... set maximum NAL size in bytes (from 0 to INT_MAX) (default 0)&#xA;  -allow_skip_frames <boolean>    E..V....... allow skipping frames to hit the target bitrate (default false)&#xA;  -cabac             <int>        E..V......P Enable cabac(deprecated, use coder) (from 0 to 1) (default 0)&#xA;  -coder             <int>        E..V....... Coder type (from -1 to 1) (default default)&#xA;     default         -1           E..V.......&#xA;     cavlc           0            E..V.......&#xA;     cabac           1            E..V.......&#xA;     vlc             0            E..V.......&#xA;     ac              1            E..V.......&#xA;  -rc_mode           <int>        E..V....... Select rate control mode (from -1 to 3) (default quality)&#xA;     off             -1           E..V....... bit rate control off&#xA;     quality         0            E..V....... quality mode&#xA;     bitrate         1            E..V....... bitrate mode&#xA;     buffer          2            E..V....... using buffer status to adjust the video quality (no bitrate control)&#xA;     timestamp       3            E..V....... bit rate control based on timestamp&#xA;</int></int></int></boolean></int></int></int></int>

  


  Looks like there is no high422 profile in libopenh264. But I can find
PRO_HIGH422 in several places of source code...

  


  ffmpeg version

  


  # ffmpeg -v
ffmpeg version N-111611-g5b11ee9429 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
  configuration: --prefix=/home/a/Downloads/myGitHub/FFmpeg_fixing/ffmpeg_openh264/ffmpeg_build/ --pkg-config-flags=--static --extra-cflags=-I/home/a/Downloads/myGitHub/FFmpeg_fixing/ffmpeg_openh264/ffmpeg_build/include --extra-ldflags=-L/home/a/Downloads/myGitHub/FFmpeg_fixing/ffmpeg_openh264/ffmpeg_build/lib --extra-libs='-lpthread -lm' --ld=g++ --bindir=/home/a/bin --enable-gpl --enable-libopenh264


  


  Why I can't use profile high422 ?