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soubibi 2nd November 2006 10:58 AM

Playing DivX in HD

I've read that "Divx Player 6.4" is optimised for playing DivX in HD format (1080p), is the same for BS Player ?

Which is the best codec for decode AC3 via SPDIF : ffdshow or AC3Filter ?

Best regards,

soubibi 8th November 2006 12:45 PM

Anyone can help me ?

adicoto 8th November 2006 06:37 PM

BSPlayer can play HD files. It's not optimized for that, because of the many formats used for HD files [WMV, AVi (DivX, XviD), MKV(DivX, XviD, H264) , TS]. But I am sure you know you can'ty have all in a lifetime, isn't it so ? I can play with BSPlayere most of the HD files I have, the sole limitation is my CPU (2,533 MHz) wich can't play for example 1080p.
I don't have S-PDIF so I can't advise you about that.
Also, about HD, Nvidia and ATI (AMD.ati) have drivers that optimize HD playing on some of their video cards.
Don't know about playing HD files from bluray or something like.

J7N 9th November 2006 11:41 AM

DivXNetworks are trying to cash-in on the hype around HiDefinition. It is important to have a fast decoder, while during standard def playback you might never notice the difference between a slow and a fast codec.

The fastest decoder for H.264 is CoreAVC.

Edit: Fastest MPEG-4 ASP decoder is libavcodec (ffdshow, year 2004).

Originally Posted by Bond
the only decoder that might have gotten faster is divx', so you might want to compare its speed against ffdshow and see if divx is able to beat it

The speed of a given decoder will be about the same in any DirectShow frontend: Light Alloy, mplayer2.exe or BSPlayer.

soubibi 10th November 2006 11:21 AM

thank you.

Digiface 11th November 2006 11:16 AM


Originally Posted by J7N

Is that CoreAVC much better than ffdshows H.264 decoder?

J7N 11th November 2006 11:25 AM

I choose CoreAVC only when my computer (2.66 GHz) is not fast enough. CoreAVC is faster but ffdshow allows to use some processing after decode, see useful statistics about the picture and stream.

Digiface 11th November 2006 11:40 AM


Originally Posted by J7N
ffdshow allows to use some processing after decode

Do you mean that ffdshow Post-processing feature?

Is it possible to set ffdshow to show the subtitles with that CoreAVC?

I have AMD Duron 1600MHz processor,so is it better to use CoreAVC than ffdshow?

J7N 11th November 2006 03:25 PM

It depends on the resolution and bitrate of your files and whether CABAC encoding has been used. I suppose your CPU could play ~2 MBit/s standard resolution files.

I think it is not possible to overlay subtitles on the already decoded video from CoreAVC. It would anyway result in too much copying overhead and possibly eliminate the benefit of CoreAVC altogether. If you have a slow computer use simple text subtitles with BSPlayer's internal rendered (draw to overlay = off).

adicoto 11th November 2006 04:42 PM

From experience, a 720p requires
- 1,6 GHz CPU if it's WMV
- 1,8 GHz if mkv
- 2 GHz if avi

an 1080i TS
- 2,6 GHz

1080p, what I've been tested yet it's not working on 2,533 CPU if mkv. NExt week I will have an 1080p WMV and see how it's working.

There are also differences generated by different video cards, some of them have acceleration for H264 files, some don't. Mine does have WMV.

Digiface 13th November 2006 10:19 AM

What are best deblocking and deinterlacing setting for CoreAVC? Or is it just ok with default settings?

J7N 13th November 2006 12:30 PM

A 4 megabit video of 1280*720 resolution in H.264/CABAC can barely be played on a 2.66 GHz Pentium. With CABAC encoding CPU usage is approx. proportional to the bitrate. And it's important that peak data rate during hard hi-motion scenes does not exceed a certain number since you don't want interruptions during playback.

The same stream if repacked into AVI won't require a faster processor. ;)

Most commercial videos – thank god – are progressive (and they should be) so deinterlacer should be off. If you have any H264 interlaced video, compare which filter looks best for you.

adicoto 13th November 2006 04:25 PM

MKV files come generally in H264, while AVI files come as XviD or DivX. That's what I ment about mkv/avi.

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