This forum is for questions and discussion of all the aspects of handling your footage. If you have questions about capturing/ripping footage, AviSynth, or compression/encoding/converting, look here.
by Suka Girl » Thu Apr 23, 2009 7:59 pm
Can anyone recommend the best way to test a codec to prove that it is truely lossless and frame independent?
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Suka Girl
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- Joined: 23 Apr 2009
by Zarxrax » Fri Apr 24, 2009 10:06 am
In avisynth:
source1 = AVISource("firstclip.avi")
source2 = AVISource("2ndclip.avi")
Compare(source1,source2)
Then play the avs script in virtualdub or something. The deviations should all be 0, and it should print a solid horizontal line along near the bottom.
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Zarxrax
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- Joined: 01 Apr 2001
- Location: Concord, NC
by Zarxrax » Fri Apr 24, 2009 10:08 am
Also by frame independent I'm guessing you mean all frames are keyframes. To check this just load the clip in virtualdub and go to file>file information.
It tells you the number of total frames and the number of keyframes. These should be equal.
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Zarxrax
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- Joined: 01 Apr 2001
- Location: Concord, NC
by Suka Girl » Fri Apr 24, 2009 6:42 pm
Thanks Zarxrax!!! You rock!
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Suka Girl
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- Joined: 23 Apr 2009
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