#1766: Can't encode MPEG-2 at more than ~3Mb/s
-------------------------------------+-------------------------------------
Reporter: | Owner:
agusdallalba | Status: new
Type: defect | Component:
Priority: normal | undetermined
Version: git-master | Resolution:
Keywords: mpeg2video | Blocked By:
dvd | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
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Comment (by agusdallalba):
out.mpg is 2242MB long, averaging 3393 kb/s for video + audio. However
ffprobe says
{{{
Input #0, mpeg, from 'out.mpg':
Duration: 01:28:05.76, start: 0.994667, bitrate: 3393 kb/s
Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p, 720x576 [SAR 1:1 DAR
5:4], 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
Stream #0:1[0x80]: Audio: ac3, 48000 Hz, 5.1(side), s16, 448 kb/s
}}}
Note the 104857 kb/s in the first stream.
FFmpeg complained a lot during the transcode about with {{{ [mpeg1video @
0x1d56f40] warning, clipping 1 dct coefficients to -255..255 }}}
I've attached the full report and a short enough sample that is
considerably blocky after after the transcode on my setup, particularly in
the background.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1766#comment:2>
FFmpeg <http://ffmpeg.org>
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