Fast lossless YV12 codec for intermediate files - XviD related.

[Poutnik]

I use 2 aproaches for XviD encoding.
First could be called "capture, encode to seeing queue, see and kill"
The second "archive aproach" use heavy filtering to Huffyuv intermediate file(s).

There is not always enough space to keep original and filtered one together.
But speed has higher priority than size to me, because I use splitted capture (FAT32)
and can filter part by part. Filtering end as YV12, as XviD needs, so it would be
logical to use YV12 lossless codec ( save space and YUY2 <> YV12 conversions )

My 1st question: Is quality loss by conversion YV12(just filtered) -> YUY2(Huffy) -> YV12(XviD)
visually remarkable ? ( IMHO should be different to YUY2 -> YV12 -> YUY2 )

My 2nd one: Is there YV12 compressing lossless codec, but faster than Huffyuv ?
(My favourite - Alparysoft realtime+predict,YV12 mode) seems - not measured - slower for me, Lagarith or even MSU significantly slower.
On the other side, MSU has excellent compression )

My 3rd one: Does exist YV12 Huffy variant ? I saw and downloaded some HuffyXXX (japanese ?), different from
original and CGE? 0.2.5 patch, but I need to say I am not clever reading their docs. Seems to have
slightly different compress approach, but YV12 is not mentioned there.

[Elic]

Poutnik
> Is quality loss by conversion YV12(just filtered) -> YUY2(Huffy) -> YV12(XviD) visually remarkable?
Absolutely no. I tested this with YV12 <-> YUY2 conversion by XviD, HuffYUV and VirtualDubMod in different combinations. Theoretically, slight difference in least significant bit of color may occur, but I haven't tested this by binary comparison, only by eyes.

[Tuesday]

I always use VBLE as an intermediate codec, and capture codec for that matter.

Find it here:

http://forum.doom9.org/showthread.php?s=&threadid=53305

It's pretty fast and the only problem i've ever had is it crashing explorer if you try and thumbnail a video using it, but then i think i'm using a pretty old version of VBLE now so thats probably been fixed.

[Leak]

Originally posted by Poutnik
My 3rd one: Does exist YV12 Huffy variant?

Yes, it's one of the codecs integrated into ffdshow.

Just use ffdshow's VfW interface to encode your YV12 video to HuffYUV, and make sure ffdshow is also decoding it afterwards - works just fine here.

np: Lufth - Hold Me (In Your Arms) (Crossways Part 1)