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Piri Miller
lossless HD
on Feb 5, 2009 at 7:19:53 pm

I have some files that were basically converted from DPX to lossless HD files (Compressor - None). FCP plays about 2 seconds and then can't play the file. However when I change the quicktime compressor in sequence settings to TIFF or Animation (also lossless, I believe...?), the clips play fine.

I'm using my internal SATA drive for this. Is it a throughput issue or is something else going on here? Also, these are basically not huge/long files. I'm having to overcut these files into a trailer. Does it really matter, if I'm able to edit in another lossless format? What is really changing in the quality of the quicktimes?

Thanks.



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walter biscardi
Re: lossless HD
on Feb 5, 2009 at 7:21:26 pm

[Piri Miller] "I'm using my internal SATA drive for this. Is it a throughput issue or is something else going on here? "

Yep. Uncompressed HD requires at least 150 to 200MB/s for playback. This achieved with 5 drives striped together as a minimum.



Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

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Rafael Amador
Re: lossless HD
on Feb 6, 2009 at 3:47:25 am

Hi Piri,
Sorry to say that when converting the DPX they haven't make the best choice.
Instead of NONE they could have choose any other lossless codec.
The most popular Animation would make the files a 30% smaller.
You can find more info here:

http://codecs.onerivermedia.com/

Rafael

http://www.nagavideo.com


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