[FFmpeg-user] Retrieve duration of an m2v >MPEG>2 elementary stream file

[Robert Krüger]

Hi,

if I invoke ffmpeg on an M2V MPEG-2 elementary stream, I get "N/A" for the
duration. I guess this is because this file doesn't contain a header that
contains the duration. Is it possible to force ffmpeg to parse the entire
file to obtain the duration?

Full command line and output:

ffmpeg -i
/Users/krueger/lesspain/samples/software/compressor/compressor_dvd_mpeg2_480_24p.m2v

ffmpeg version N-109938-g67fd1b79e7 Copyright (c) 2000-2023 the FFmpeg
developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration:
  libavutil      58.  3.100 / 58.  3.100
  libavcodec     60.  5.100 / 60.  5.100
  libavformat    60.  4.100 / 60.  4.100
  libavdevice    60.  2.100 / 60.  2.100
  libavfilter     9.  4.100 /  9.  4.100
  libswscale      7.  2.100 /  7.  2.100
  libswresample   4. 11.100 /  4. 11.100
Input #0, mpegvideo, from
'/Users/krueger/lesspain/samples/software/compressor/compressor_dvd_mpeg2_480_24p.m2v':
  Duration: N/A, bitrate: N/A
  Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, smpte170m,
progressive), 720x480 [SAR 32:27 DAR 16:9], 30 fps, 59.94 tbr, 1200k tbn
    Side data:
      cpb: bitrate max/min/avg: 7700000/0/0 buffer size: 1835008 vbv_delay:
N/A
At least one output file must be specified

Thanks,
Robert