Videos with non-square pixels do not display at correct aspect ratio (1 Viewer)

[qb123]

TV-Server Version:
MediaPortal Version: 1.0 RC2
MediaPortal Skin:
Windows Version: Windows XP SP3
CPU Type: Intel E8200
HDD:
Memory: 2GB DDR2-800
Motherboard: ASUS P5K-Pro
Video Card: ATI HD3850
Video Card Driver:
Sound Card: Creative X-Fi
Sound Card AC3:
Sound Card Driver:
1. TV Card:
1. TV Card Type:
1. TV Card Driver:
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: MPV Decoder
MPEG2 Audio Codec: FFDShow
h.264 Video Codec: CoreAVC
Satelite/CableTV Provider:
HTPC Case:
Cooling:
Power Supply:
Remote:
TV:
TV - HTPC Connection:

When I play videos that don't have square pixels from MP My videos, they do not display at the correct aspect ratio. For example a video which is encoded with 640x480 (4:3) but a display ratio of 2.21:1 still plays at 4:3 in MP, but in other players like WMP, MPC, Zoomplayer etc it plays at the correect 2.21:1

I've uploaded a sample video to demonstrate this problem:
RapidShare: Easy Filehosting

 

[tourettes]

Tested that clip on my dev PC. Both VLC and MediaPortal show the aspect ration correctly.

 

[ronilse]

Hi,
Does this also occur when using other codecs for video the MPV(we know that codecs has a problem with AR)

Regards
Roy

 

[tourettes]

Hi,
Does this also occur when using other codecs for video the MPV(we know that codecs has a problem with AR)

File was mpeg4 file, so MPV shouldnt be able to decode that. Or maybe the file extension is just wrong and it indeed a MPEG2 file. That would then use MPV -> aspect ration bug.

 

[ronilse]

Hi,
Does this also occur when using other codecs for video the MPV(we know that codecs has a problem with AR)

File was mpeg4 file, so MPV shouldnt be able to decode that. Or maybe the file extension is just wrong and it indeed a MPEG2 file. That would then use MPV -> aspect ration bug.

Hi,
nope, downloaded it now & tested - it uses cyberlink h264, but AR it's correct here using MP.

Regards
Roy

 

[qb123]

Ok I just changed the decoder from coreavc 1.7 to ffdshow and the AR is now correct.

So I guess it's a problem with coreavc and MP because other players using coreavc display the correct ratio. This is a shame as coreavc is a much better decoder (and is not free).

 

[5Hundred]

coreavc works fine with mp, problem lies at your end

 

[deebo]

CoreAVC won't handle non standard SAR's (sample aspec ratio).

If the SAR differs from 12:11 (PAL 4:3), 16:11 (PAL 16:9), 10:11 (NTSC 4:3) or 40:33 (NTSC 16:9), there is a chance that CoreAVC will crap out and display at wrong AR.

PowerDVD h264 codec displays all SAR's, use that or ffdshow if you have non standard SAR videos.

 

[benjerry]

I also have this problem, using CoreAVC 1.8.5. stream in mkv container plays fine in windows mediaplayer / vlc player with sar 16/15 (720x576 @ 4/3). In mediaportal keeps at sar 1/1.
Might it be a problem related to driver/hardware? as at another computer (not htpc with output to plasma tv but normal pc wth lcd) it displays correctly.