kdenlive and ffmpeg

[Sergio Belkin]

2014-04-12 18:30 GMT-03:00 John Pilkington <J.Pilk at tesco.net>:

> 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
>


I have no problem using ffmpeg from command line, so I wonder if is
inherent to this kdenlive build... I've tested on Huayra (an argentinian
distro derived from Debian 7) using kdenlve and has no this problem...
-- 
--
Sergio Belkin  http://www.sergiobelkin.com
LPIC-2 Certified - http://www.lpi.org
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