kdenlive and ffmpeg

[John Pilkington]

On 12/04/14 21:20, Sergio Belkin wrote:
> John,
>
> As far I understand, it's not a video problem, if I choose only audio,
> gui freezes anyway...
>
> Thanks, I don't understand how does encodingprofiles.rc work exactly...
>

OK.  I tried this command line on an HD recording from an old BBC 
RedButton_HD DVB-T2 and it produced a vlc-playable file.  I suppose 
Google would have found complaints if kdenlive was failing to transcode, 
but I have seen failures earlier because of other changes in ffmpeg 
syntax.  I stopped the transcoding early. I haven't tried running 
kdenlive yet.   The input filename here is unrelated to that of the 
original recording, and I'm not recommending use of this command line!

Good luck!

John

  ionice -c3 ffmpeg -i 1002_20131021153400.mpg -f mpeg -acodec mp2 -ab 
192k -vcodec mpeg2video -minrate 0 -vb 4000k test.mpg

ffmpeg version 1.2.6 Copyright (c) 2000-2014 the FFmpeg developers
   built on Mar  5 2014 08:21:01 with gcc 4.8.2 (GCC) 20131212 (Red Hat 
4.8.2-7)

uname -r
3.13.9-100.fc19.x86_64

Input #0, mpegts, from '1002_20131021153400.mpg':
   Duration: 00:50:20.89, start: 24515.731144, bitrate: 7572 kb/s
   Program 1
     Stream #0:0[0x1a2d]: Video: h264 (High) ([27][0][0][0] / 0x001B), 
yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Stream #0:1[0x1a2e](eng): Audio: aac_latm ([17][0][0][0] / 0x0011), 
48000 Hz, stereo, fltp
     Stream #0:2[0x1a36]: Unknown: none ([11][0][0][0] / 0x000B)
     Stream #0:3[0x6f]: Unknown: none ([11][0][0][0] / 0x000B)

Input #0, mpeg, from 'test.mpg':
   Duration: 00:00:58.85, start: 0.529978, bitrate: 4220 kb/s
     Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 1920x1080 
[SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 192 kb/s