[FFmpeg-user] Crash on DAR/SAR source change while HW transcoding

Mitja Pirih mitja at alternet.si
Tue Jun 5 11:55:37 EEST 2018


I am transcoding a live channel from live source. Everything works as
expected until SAR/DAR changes then ffmpeg crashes out. It happens only
when I use HW transcoding. Have you seen this behavior before? Any ideas
how to solve this issue?

/usr/bin/ffmpeg -hwaccel cuvid -c:v mpeg2_cuvid -i
udp:// -c:a libfdk_aac -profile:a aac_he -ac 2 -b:a 64k
-ar 48000 -c:v h264_nvenc -preset llhq -profile:v high -maxrate 2500k
-bufsize 5000k -f flv rtmp://

ffmpeg version N-90591-g4b736bc Copyright (c) 2000-2018 the FFmpeg
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 20160609
  configuration: --prefix=/home/mp/ffmpeg_build
--extra-ldflags=-L/home/mp/ffmpeg_build/lib --extra-libs=-lpthread
--bindir=/home/mp/bin --enable-cuda --enable-cuvid --enable-libnpp
--extra-ldflags=-L/usr/local/cuda/lib64 --enable-gpl --enable-libass
--enable-libfdk-aac --enable-libfreetype --enable-libmp3lame
--enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx
--enable-libx264 --enable-libx265 --enable-libspeex --enable-nonfree
  libavutil      56. 12.100 / 56. 12.100
  libavcodec     58. 17.100 / 58. 17.100
  libavformat    58. 10.100 / 58. 10.100
  libavdevice    58.  2.100 / 58.  2.100
  libavfilter     7. 14.100 /  7. 14.100
  libswscale      5.  0.102 /  5.  0.102
  libswresample   3.  0.101 /  3.  0.101
  libpostproc    55.  0.100 / 55.  0.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile
options] outfile}...

Use -h to get full help or, even better, run 'man ffmpeg'

===== Log =====
Starting ffmpeg...
[mpeg2video @ 0x2a65000] Invalid frame dimensions 0x0.
    Last message repeated 15 times
Impossible to convert between the formats supported by the filter
'Parsed_null_0' and the filter 'auto_scaler_0'
Error reinitializing filters!
Failed to inject frame into filter network: Function not implemented
Error while processing the decoded data for stream #0:0
[libfdk_aac @ 0x2b24340] 3 frames left in the queue on closing

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