[FFmpeg-user] Failure with assertion "avpkt->buf failed at libavcodec/encode.c"

[James E. Baird]

Hello,

I am getting a failure (the assertion at the end) trying to transcode using h264_nvenc. The error goes away only when I remove the h264_nvenc encoder. I cannot find any information on this error. Has anyone seen this before?

Hostname:~$ ffmpeg -i 'udp://@239.1.1.92:59092'  -vcodec h264_nvenc -f mpegts 'udp://@239.129.100.1:59001?pkt_size=1316'
ffmpeg version N-95733-g73ee53f Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
  configuration: --prefix=/home/circle/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/circle/ffmpeg_build/include --extra-ldflags=-L/home/circle/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/circle/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libvorbis --enable-libx264 --enable-libx265 --enable-nonfree
  libavutil      56. 35.101 / 56. 35.101
  libavcodec     58. 62.100 / 58. 62.100
  libavformat    58. 35.100 / 58. 35.100
  libavdevice    58.  9.100 / 58.  9.100
  libavfilter     7. 66.100 /  7. 66.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[mpeg2video @ 0x55e2ee091f00] Invalid frame dimensions 0x0.
    Last message repeated 19 times
Input #0, mpegts, from 'udp://@239.1.1.92:59092':
  Duration: N/A, start: 33261.731900, bitrate: N/A
  Program 3
    Stream #0:0[0x31]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Stream #0:1[0x34](eng): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 5.1(side), fltp, 384 kb/s
    Stream #0:2[0x35](spa): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, stereo, fltp, 96 kb/s (visual impaired) (descriptions)
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (h264_nvenc))
  Stream #0:1 -> #0:1 (ac3 (native) -> mp2 (native))
Press [q] to stop, [?] for help
Output #0, mpegts, to 'udp://@239.129.100.1:59001?pkt_size=1316':
  Metadata:
    encoder         : Lavf58.35.100
    Stream #0:0: Video: h264 (h264_nvenc) (Main), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 2000 kb/s, 29.97 fps, 90k tbn, 29.97 tbc
    Metadata:
      encoder         : Lavc58.62.100 h264_nvenc
    Side data:
      cpb: bitrate max/min/avg: 0/0/2000000 buffer size: 4000000 vbv_delay: N/A
    Stream #0:1(eng): Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
    Metadata:
      encoder         : Lavc58.62.100 mp2
Assertion !avpkt->data || avpkt->buf failed at libavcodec/encode.c:4380.0kbits/s speed=0.332x
Aborted (core dumped)


Thanks,
-James




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