[FFmpeg-user] Meaning of ffprobe output

[Ulf Zibis]

Hi,

can anybody explain me the data of ffprobe, I don't find enough hints in
the docu. E.g.:
$ ffprobe CYD_copy.vob
Input #0, mpeg, from 'CYD_copy.vob':
  Duration: 01:16:20.74, start: 0.500000, bitrate: 7068 kb/s
    Stream #0:0[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 256 kb/s
    Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg,
top first), 704x576 [SAR 12:11 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
What is:
tv
bt470bg
tbr
tbn
tbc

I'm also wondering, why Stream #0:1 is the video, as it was created by
$ ffmpeg -ss 00:03 -t 01:16:20 -i
"concat:001-C001/CYD-001.vob|001-C002/CYD-001.vob|..." -movflags
+faststart -c copy CYD_copy.vob
from files like
$ ffprobe 001-C001/CYD-001.vob
Input #0, mpeg, from
'/home/ich/Videos/dvdrip-data/CYD/vob/001-C001/CYD-001.vob':
  Duration: 00:00:20.41, start: 0.231578, bitrate: 74597 kb/s
    Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg,
top first), 704x576 [SAR 12:11 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:1[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 256 kb/s

After transcode with
$ ffmpeg -i CYD_copy.vob -movflags +faststart -vf atadenoise -c:v
libx264 -c:a libmp3lame -q:a 4 CYD_atadenoise_H.264.mp4
I get:
$ ffprobe CYD_atadenoise_H.264.mp4
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'CYD_atadenoise_H.264_mp3-q4.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.83.100
  Duration: 01:16:20.42, start: 0.000000, bitrate: 1403 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
704x576 [SAR 12:11 DAR 4:3], 1276 kb/s, 25 fps, 25 tbr, 12800 tbn, 50
tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 119 kb/s (default)
    Metadata:
      handler_name    : SoundHandler

Does 50 tbc mean, that I still have 50 interlaced half-frames per second?

Thanks for your comments

-Ulf

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