1 Topic by SVPuser (edited by SVPuser 25-02-2013 10:19:56)

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Topic: hardware acceleration

I'm using svp on my notebook. But I have only a core i3 3110m, so I'm trying to use Intel quick sync in ffdshow in order to have more CPU power left for svp. With H.264 videos it works fine but with mpeg2 I have two problems:

1) I can't get to work Intel quick sync for DVD-plaback. The single  .vob files from the DVD can be played with quick sync but  the whole video.ts file not.

2) I have some video-trailers  where ffdshow with quick sync plays the files with 29,976 fps but they have only 23,976 fps. 

The specifications of the trailers are:

Video
ID                                       : 224 (0xE0)
Format                                   : MPEG Video
Format-Version                           : Version 2
Format-Profil                            : Main@Main
Format-Einstellungen für BVOP            : Ja
Format-Einstellungen für Matrix          : üblich
Dauer                                    : 2min 27s
Bitraten-Modus                           : variabel
Bitrate                                  : 3 664 Kbps
maximale Bitrate                         : 8 552 Kbps
Breite                                   : 720 Pixel
Höhe                                     : 480 Pixel
Bildseitenverhältnis                     : 16:9
Bildwiederholungsrate                    : 23,976 FPS
Standard                                 : NTSC
ColorSpace                               : YUV
ChromaSubsampling                        : 4:2:0
BitDepth/String                          : 8 bits
Scantyp                                  : progressiv
Scanreihenfolge                          : 2:3 Pulldown
Bits/(Pixel*Frame)                       : 0.442
Stream-Größe                             : 64,2 MiB (87%)


I have tried ffdshow, Lav and potplayer with Intel quick sync and all have the same problem.

  • MAG79
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Re: hardware acceleration

SVPuser

2:3 Pulldown

It is way to transport 23.976 fps movie via broadcasting 29.97 fps channel. Google "Telecine 2:3 Pulldown" for more info.
I don't know if QuickSync have hardware IVTC support.

Try LAV to accelerate decode whole DVD.

  • MAG79
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Re: hardware acceleration

SVPuser

2min 27s

Share this file. I will have a look.

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Re: hardware acceleration

MAG79 wrote:

SVPuser

2min 27s

Share this file. I will have a look.

Thanks for your response.

My Internet connection is slow so I will not uplod that file. But  a video-trailer  with same problems can be downloaded here.
I think that every trailer on that page have the same problem.
http://www.demo-world.eu/trailers/redir … iamond.rar

  • MAG79
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Re: hardware acceleration

SVPuser
Thank you. I need do some tests with it.

  • MAG79
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Re: hardware acceleration

First modification of SVP 3.1.4 is ready: soft-telecined video fix.

This mod can recognize wrong ffdShow framerate of soft-telecined video and correct this value.

Part of Additional info:

Last processed file parameters:
Filename: movie_blood_diamond.vob
Frame size and frame rate: 720x480 pixels, 23.976 fps
Internal ffdShow-framerate: 29.97 fps (soft-telecined index: 0.8)
...

Download: SVPMgr314_soft-telecined_video_mod.zip (358 KB)

1. Exit SVP-Manager.
2. Unpack and copy to SVP 3.1.4 folder with file rewriting.
3. Launch SVP-Manager.

SVPuser
Try it!

Post's attachments

SVPMgr314_soft-telecined_video_mod.zip 358.33 kb, 432 downloads since 2013-02-28 

7 Reply by SVPuser (edited by SVPuser 01-03-2013 10:25:18)

  • Thanks: 5

Re: hardware acceleration

Great! I will try it.

Edit:

Still have the same problem.  With quick sync these files are played to fast but smooth (potplayer)  or they are played at normal speed but falter every few seconds (ffdshow/Lav in MPC) with or without SVP.
With other encoders svp   produces a very smooth plaback  but  still  recognizes 29,9 fps.

  • MAG79
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Re: hardware acceleration

SVPuser
these files
I tested on movie_blood_diamond.vob.
Can you get good result on it?
If yes then give me really problem file. I will take a look. wink

falter every few seconds
Whta the falter? Please explain in details.

still  recognizes 29,9 fps
Where you see this value? Screenshot?

9 Reply by SVPuser (edited by SVPuser 01-03-2013 22:42:50)

  • Thanks: 5

Re: hardware acceleration

The 29,97 fps are shown on the screen by svp.

It is the same problem with movie_blood_diamond.vob.   With potplayer and it's integrated quick sync encoder  the video is played  to fast (about 10 seconds per minute) and audio gets    
asynchronous.

Using Lav or ffdshow with quick sync the video is played at normal speed but  seems  to stop every second for a very short but noticeable  time (perhaps some ms) (thats what I mean with falter) .

This playback behavior can be recognized with or without using svp. So it's  a problem with the quick sync encoder in Lav/ffdshow and potplayer.



@MAG79 Can you play the file with quick sync  without my mentioned problems?

  • MAG79
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Re: hardware acceleration

SVPuser
I found the problem at my home computer. I will try to fix it.