On Friday 09 June 2006 05:26, Dimitrios wrote:
> Cinelerra needs to do things cleanly, without using linux-specific hacks
> with pipes and scripts.
>
> I've been around this mailing list for a month or so and while i've got
> cinelerra installed on my system, i'm still not using it.
>
> I'll wait for another month or so and if cinelerra doesn't do proper DVD
> compatible output then i'll continue using Windoze and Pinnacle Studio.

If Cinelerra does get this ability, I probably won't use it that often. The 
reason is, I need to convert to several different file formats from the same 
source video. Rather than render several times, it makes more sense for me to 
render separately to YUV4MPEG and WAV files, then use ffmpeg:
(ignoring aspect ratios and other options for simplicity here)
ffmpeg -f dvd -i file.yuv -i file.wav dvd.vob
ffmpeg -f vcd -i file.yuv -i file.wav -s 352x240 vcd.mpg
ffmpeg -f mov -i file.yuv -i file.wav -s 320x240 video-ipod.mov
etc...

The end result is timesaving, as ffmpeg is very quick to compress these files.

However, I also agree that the MPEG-PS encoding feature needs to be added into 
Cinelerra - I've even made an attempt to work on it myself. However, I 
seriously doubt I'll be able to finish it in a month by myself - it might be 
a week of work for Andraz, but for someone who isn't intimately familiar with 
the internals of Cinelerra and AV multiplexing, it's a learning curve.

I do however think it is vitally important to get one working encoder using 
libavformat/libavcodec to produce muxed files. When this happens it will be 
easy to use that code as a basis to encode many additional input/output 
formats (taking advantage of the avformat library) that probably wouldn't be 
on the radar otherwise, but could make Cinelerra more popular with other 
groups of video enthusiasts (for instance , people interested in video 
podcasting, SWF video, PSP, etc), hopefully leading to more developers 
getting involved long-term.

So, I'm motivated to put some serious work into a libavformat-based MPEG-PS 
encoder, but I need help, mostly in getting the rough framework designed. 
Anyone else working on this want to collaborate?

-Joe

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