vc1 elementary to h264 elementary question!

[brucexx]

I am trying to convert vc1 elementary stream to h264 elementary stream. Whattool would you recommend? Currently I am using MeGui to convert the .m2ts file to mp4 withh264. I was wondering if you have any suggestions for conversion of onlyelementary streams - later I could use tsmuxer to mux to h264 elementary to .tsor .m2ts with original sound stream.

What would allow me to convert using all 4 cores of my CPU - I am trying tothe MeGui but I can see that even with the Priority High and selection of"Threads = 4" vs. default 0 only one core is working and not even100% but varying between 20% to 90% (more around 20 to 50 tho!) which takes alot of time.

I would appreciate any help and suggestions.

Thanks

[jagabo]

Priority doesn't effect encoding speed unless there are multiple processes vying for CPU time. All the front ends that use x24 will usually let you use your CPU to its full potential. Set the number of threads to 1.5 times the number of cores -- 6 for a quad core CPU. I don't know which ones will read a vc1 elementary stream though.

[poisondeathray]

There can be other reasons for low cpu usage, like filtering bottlenecks, slow encoding settings causing bottlenecks

DGNVTools can be used as a source filter for elementary VC-1 , if you have a compatible Nvidia GFX card, but it's payware
(^This hotlink is incorrect by the way, it's NOT DGAVCDec that I'm referring to)

Put the vc1 into container (e.g. transport stream using tsmuxer, or mkv using mkvmerge), then use directshowsoruce or ffvideosource

[brucexx]

"Put the vc1 into container” - it actually is originally in thecontainer .m2ts with audio - I am trying to convert .m2ts with vc1 video + ac3audio to .m2ts with h264 + the same audio and I am wondering what would be thebest way.

I tried following the instruction of putting the vc1 into wmv container with2 ch wma audio but the end result did not please me - the audio was out ofsynch in a weird way that I could not adjust it, it was in sync then it wasn'tthen it was again, this type of adjusting is out of my league... so I decidedto convert the vc1 to h264.

Interesting soft for GeForce only 15$ did you use it is it worth it in termsof speed? I have GTX 280 which is old but newer than my q940 quad?

Thanks

[poisondeathray]

"Put the vc1 into container” - it actually is originally in thecontainer .m2ts with audio - I am trying to convert .m2ts with vc1 video + ac3audio to .m2ts with h264 + the same audio and I am wondering what would be thebest way.


I tried following the instruction of putting the vc1 into wmv container with2 ch wma audio but the end result did not please me - the audio was out ofsynch in a weird way that I could not adjust it, it was in sync then it wasn'tthen it was again, this type of adjusting is out of my league... so I decidedto convert the vc1 to h264.

Leave it in the original container. Don't demux it. If you leave it as is, it will work in megui

Interesting soft for GeForce only 15$ did you use it is it worth it in termsof speed? I have GTX 280 which is old but newer than my q940 quad?

It just helps with decoding, offloading the cpu cycles used. If anything indexing provides more consistency, especially if you are doing any temporal filtering. For slower computers, and slow encoding settings ,it can be a significant speed boost. It depends on the source footage (eg. hd vs sd), computer setup, filters used, settings used.

For any of the fast presets on a i7 or better, Directshow or ffms-mt can be several times (!) faster. Decoding is capped at ~60FPS. But using some of the slow encoding settings or filters you can get a decent % gain. If you normally get 2fps under those encoding conditions, 3fps is a 50% gain right..