Hello Steven
Thanks for the reply ....

>       Wow - those are rather different problems.  

Yes ... I realised once I sent the first email.
lets put it this way : is the command -a somewavefile compulsory ? e.g.does qt 
absolutely need a soundtrack

If yes then question (mail#) 2 is resolved since all what I get from qtinfo is 
"error in header"

>       But unless you're using FinalCutPro (or similar program) DO NOT USE
>       '-X'.  10bit 4:2:2 (what's called "v210") is a moderately esoteric
>       format used by higher-end capture cards.

I think my camera is feeding my folders with these 10 bits 422. 

>       IF you see 'compressor v210' then you've created a file that FinalCut
>       will understand but probably isn't what you want ;)

To a certain extent no, but it may be useful in the future

>       The (bad) news is that MPlayer has no idea what '2vuy' (8bit 4:2:2)
>       is (well, it might know 4:2:2 but not how to parse it from a Quicktime
>       file).

Ok I see ... I was trying gmerlin recently ... but did not buid it all

>       But if 'qtinfo' gives info similar to that above then I have no idea
>       why 'lqtplay' is complaining about a bad header.

Qtinfo is complaning as well :-)

>       Hmmm, what exactly does lqtplay say?  Or are you thinking of 'yuvplay'?
>       yuvplay won't work - general Quicktime decoding capability is not
>       (at the moment) present in mjpegtools.

no no  ... really lqtplay :-)


>       qttoy4m should be able to play the file - from there you can feed the
>       data into mjpegtools pipeline.

For monitoring yep that is useful.
Thanks again
E


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