DivX or XviD capturing with DC10+?

[pogo stick]

I have DC10+ and I'm using it with VCR for timed capturing when I am not at home instead of taping. But file sizes are too big. About 25 GB pre hour for full resolution.
Is there any way to reencode DC' MJPEG to something like DivX or XviD on the fly before writing on HDD?
I think my processor should handle it. I captured with TV tuner to DivX. And with DC it would need software decoding of MJPEG I guess.

[lchiu7]

I have a DC10+. It does native mjpeg compression. If you are running XP and download the latest drivers, you can use Studio 7 to alter the compression rate of the card. I typically get about 9G/hour for my recordings which is fine since I then compress to MPEG2 before authoring to DVD. I capture with iuvcr but have found that iuvcr cannot change (and keep the settings) of the compression for the card

Larry

[pogo stick]

Yes, I know about native mjpeg compression and Studio 8 came with DC10+ Retail. I didn't like Studio 8 for capturing. Too big and not very comfortable. And I have a feeling that it skips frames for AV synchronization (I may be wrong). I tried iuVCR. It's nice, but preview window is like a slide show, audio is not synchronized with video with every settings I tried (maybe it's because of my hardware) and it's not free. Did you tried Virtual VCR? It has almost the same options as iuVCR. And plus it is possible to resample audio on capture to make it in sync with video (http://virtualvcr.sourceforge.net/html/virtualvcr/sync.php). Presets can be used, the program is free and there is Matroska version.
But I was thinking that it would be great to have an ability to recompress mjpeg to DivX or XviD on capture to reduce file sizes (high compression in mjpeg don't look very good), since it is possible to use DC10+ with DScaler to decompress mjpeg and watch it on full resolution in DShow. But DScaler for capturing is not very useful (it deinterlaces on the fly). As far as I know iuVCR and Virtual VCR can not do that. Maybe if DC10+ would be as popular as TV tuners someone would make it possible. But now I doubt it.

[pogo stick]

If someone interested, it is actually possible with MJPEG Decompressor in filter sections of Virtual VCR or iuVCR. And then uncompressed video can be encoded with any codec. I don't know why I didn't think about filtering.

[Inc]

Originally posted by lchiu7
[B]I have a DC10+. It does native mjpeg compression. .... I typically get about 9G/hour for my recordings which is fine since I then compress to MPEG2 before authoring to DVD.

I also got a Pinnacle DC Card (ok, its a dc30 but handled also by a dc10+ driver, so it doesen't matter)

1. 9GB/Hour at mjpeg capturing is Veeery few if you capture in full screen IF you want to end up in a good quality which is needed to encode again to mpeg afterwards.

2. The DC hardware mjpeg onboard codec is the most sexy thing I do know, so why dont woking with it?
Mjpeg YUY2 at the correct choosen Datarate is a very good material to work with .... less chroma-issues then YV12 and not that much compressing (according to quality).
And if the final size does blow up to much your HD, you really should think about buying a second 60GB HD as they get cheaper and cheaper ... your final encoding in mpeg1/2/4 from that YUY2 Capture will enjoy that (only my recommendation).

3. IF you cant resist to finally end up in another codec-output, do as followed:
- choose in Filters "PicVideo Mjpeg decompressor" (as its the fastest mjpeg codec)
- choose in the codec section the prefered codec where you should activate "interlaced" or Filedbased if >240/288 lines!

BUT you got a disadvantage compared to non-hardware-onboard-codec Cards: When using DC Series YOU CANT deactivate the DC/mjpeg compression!
Means the CPU first has to spend an amount of power to decompress and by this you got less power to encode finally while capturing using your preferd codec like Xvid i.e.
So you will have to deal with 384x576/480 when encoding using another codec finally as if higher width reslutions won't be handled anymore by your CPU ... as I really do guess!

;-)