H.264 and Corel Visual Studio X2 rendering problems

pajr777

Standard Member
I have no hair left, not that I had much to start with...

I have a Samsung VP-HMX20C, and have a number of MP4 files captured at 1920 x 1080 50i in H.264 format.

When I play the files in Windows Media Player they look great. The picture is crisp and the pans are very smooth.

I load the files in VS X2, and it reports them as H.264 Main Profile Video, Upper Frame First, 24 bits, 1920 x 1080 16:9, 25.000 frames per second. I assume it knows they are 50fps interlaced and shows this as 25fps?

I put together the video clips and go to share to create the output file.

The output video looks much much worse - blocky, jerky and especially bad on pans - they have lost all smoothness and look terrible.

I have tried both AVCHD and MPEG-2 formats, with data rates up to 60,000 kbps, and no matter what options I try I get the same result. I can't see any other output formats that keep 1920 x 1080 which is my preferred format for streaming over the LAN to my Xbox360.

Is this a limitation of X2, my hardware or is it (hopefully) user error?

I'm running a Dual core 2.8Ghz with 2Gb ram, Vista 32bit SP1.

Many thanks.
 

senu

Distinguished Member
The only way to know is to try other software ( Nero Vision, Sony Vegas ect)

Another is to try footage from other AVCHD camcorder with X2 to see how it turns out

60,000 kbps is way too high , should you need that much?
 

pajr777

Standard Member
The only way to know is to try other software ( Nero Vision, Sony Vegas ect)

Another is to try footage from other AVCHD camcorder with X2 to see how it turns out

60,000 kbps is way too high , should you need that much?


Thanks for the tip, I'll d/l the Vegas trail and experiment.

I tried 60k in desparation really, the raw video from the camera comes in about 14k.

I am right in thinking that because the raw files are "Upper Field First" I should keep that setting for the output format?
 

A n d r e w

Well-known Member
I have a Samsung VP-HMX20C, and have a number of MP4 files captured at 1920 x 1080 50i in H.264 format. . . . I load the files in VS X2, and it reports them as H.264 Main Profile Video, Upper Frame First, 24 bits, 1920 x 1080 16:9, 25.000 frames per second. I assume it knows they are 50fps interlaced and shows this as 25fps?
Just a clarification: 50i is 25 frames per second, two fields per frame, interlaced - not 50 frames per second. You should probably keep the field order in the same configuration as whatever is native - though you could try reversing the order to see if it makes any difference or - assuming your final destination is viewing on a computer - render / export your clip as deinterlaced video, in which case there will be no half-frame fields.
 

pajr777

Standard Member
Just a clarification: 50i is 25 frames per second, two fields per frame, interlaced - not 50 frames per second. You should probably keep the field order in the same configuration as whatever is native - though you could try reversing the order to see if it makes any difference or - assuming your final destination is viewing on a computer - render / export your clip as deinterlaced video, in which case there will be no half-frame fields.

Thanks for that.

I intend for the final destinations to be Xbox 360 -> 1080p projector, and computer via Windows Media Player.

The camera has the option to shoot 50i or 25p, any advice on which would be best?
 

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