Cineform compatibility with On2 Flix pro?

totally lost wrote on 4/12/2007, 1:03 PM
Hi Guys,

I am having a problem when I render Cineform AVI files and then render to .flv via Flixpro.

Basically with short clips 1-2 minutes, Flix pro likes to chop off the last 3-10 seconds of the video. This is a random problem. I can do 10 encodes of 10 different clips from the same tape and encode # 6 is missing the last 4 seconds of the video, it basically get chopped off. All the others are fine. I have re rendered the avi and the same problem in the exact same place. I have even added 5 - 10 seconds to the end of the veg file and encoded using Cineform and get the same result. I have also taken the same veg file and rendered to wmv and then to Flix pro and no problem. It seems as though Cineform is somehow giving Flix pro a message that the video is over prematurely. Just a guess.

I went to the Flix pro forum and it seems this has been a problem for a while. But I am not sure if it is with Cineform or just all avi'sI called On2 and got a support person to help me out. He alluded to the fact that it might have something to do with Cineform.

Is anyone else having this problem? If so please get a few clips( .flv ) together and I will give you an On2 ftp site address to upload to soon. Obviously I will be sending them a few clips too. But I think the more the merrier. Maybe we can get some clues with many different clips to study.

On2 says they will look into the problem.

Thanks!

Comments

Laurence wrote on 4/12/2007, 5:21 PM
That and I notice a little delay to the audio. The audio gets ever so slightly delayed and not in perfect sync.
totally lost wrote on 4/13/2007, 1:16 PM
Laurence,

So intermittently your videos get chopped off at the end? I d 5 encodes last night and 2 of them got clipped at the end both with about 5 secongs left, both video under 2 minutes.

What camera are you using? Have you tried the DV widescreen instead of cineform. If so what kind of results are you getting when finalizing to .flv? Is the quality as good?

Thanks
Laurence wrote on 4/13/2007, 1:34 PM
To be honest, I hadn't really noticed the chopping off at the end issue. The one that drives me mad is the video/audo sync. The audio gets delayed slightly behind the picture and lips don't quite sync to what people are saying. There's a good chance that my endings are truncated too, but I was so annoyed by the sync problem I didn't let my files play to the end.

If you render to a DV widescreen avi first in order to render to flv second, make sure you render to a deinterlaced 29.97 progressive avi. You'll get better resolution that way.

I've been getting the best results by rendering to a 960x540 uncompressed avi using Virtualdub with a deinterlace filter dropping one field (which gives you 1440x540 pixels) and then using a lancos 3 resize filter to resize that to 960x540. Then I use that 960x540 uncompressed avi to render whatever delivery format I need: DivX, Quicktime Pro mp4, On2 Flash, etc. It works great and looks outstanding, but it would be easier if On2 fixed there problems.

NickHope wrote on 6/1/2007, 12:30 AM
Flix Pro was chopping off the end of a video when I was rendering from a SonyYUV AVI. I also noticed that Brightcove's Publishpod was doing the same, so presumably they might be using FlixPro under the bonnet.

When I fed Flix Pro a Cineform AVI instead of the Sony YUV one it was fine however. I feel this is a Flix problem, not a Cineform problem.