> On Mon, 2010-02-01 at 22:31 +0100, Ed Vaessen wrote:
>> I use 64bit OpebSuSE 11.2 with CV 2.1.
>> I use high quality JVC footage for a project that consists of tod files.
>> They are HDV 1920x1080. I converted them first to mpg using the ffmpeg
>> command:
>
>> Rendering to .m2v using file format YUV4MPEG video with pipe:
>>
>> ffmpeg -f yuv4mpegpipe -i - -y -r 25 -b 28000000 -f mpeg2video %
>>
>> Audio to mp3 using file format mpeg audio 384kb/s layer II
>>
>> Muxing them with the command:
>>
>> ffmpeg -i rendered.m2v -i rendered.mp3 -vcodec copy -acodec copy
>> output.mpg
>>
>
> Ed,
> I find mplex is a little more reliable in terms of audio/video sync'ing
> mpgs out of Cinelerra. I render out 1080P mpegs from my Canon 5D using
> a pipe like this:
> mpeg2enc --multi-thread 8 --verbose 0 --aspect 3 --format 3 --frame-rate
> 5 --video-bitrate 24000 --nonvideo-bitrate 384 --interlace-mode 0
> --force-b-b-p --video-buffer 448 --video-norm n --keep-hf
> --no-constraints --sequence-header-every-gop --min-gop-size 6
> --max-gop-size 6 -o $NEW.m2v
>
I used slightly different mpeg2enc pipe:
mpeg2enc --multi-thread 8 --verbose 0 --aspect 3 --format 3 --frame-rate 3
--video-bitrate 28000 --nonvideo-bitrate 384 --interlace-mode 0
--force-b-b-p --video-buffer 448 --video-norm p --keep-hf --no-constraints
--sequence-header-every-gop --min-gop-size 6 --max-gop-size 6 -o %
The resulting file, of course without sound, was surprisingly enough also
without video. Only black frames. Though the counter was progressing and
the length was also correct. Only black...
The command: tcprobe -i output.m2v
told me thsi:
[tcprobe] MPEG elementary stream (ES)
[tcprobe] summary for output.m2v, (*) = not default, 0 = not detected
import frame size: -g 1920x1088 [720x576] (*)
aspect ratio: 16:9 (*)
frame rate: -f 25.000 [25.000] frc=3
no audio track: (use "null" import module for audio)
Any idea about what is going on?
Ed
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