When I re encode a VOB file with HCenc VBR 2-pass, the size is decreased to 877Mb (it was 1048Mb originally). I set auto bitrate calculation, but maybe I should fix it 9000 kbps. I use AVStoDVD and I see no other option for encoding. I would like to keep the original size and preserve quality, if possible.
Thank you in advance for any advices.
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no.. I removed a logo. I need to re encode.
Interesting... AVStoDVD always encodes to the highest average bitrate it can, up to 8500k by default.
It sets max to 9000k. Use Bitrate Viewer to compare the old and new.
QUenc is supposed to be CBR. Did you try that?
The re-encoding of an mpeg-2 could get pretty close to the source mpeg (subjectively).
How did you remove the logo?
Did you produce an intermediate file, or are you doing it in the avisynth script dynamically
as the new mpeg-2 in encoded?
Here's a test I did, 1080p MKV > HCenc,
HCenc mpeg-2 > AVStoDVD (Quenc)
Last edited by mathmax; 14th Dec 2011 at 16:06.
NO Quenc is not supposed to be better, but it does do CBR, where HCenc does not...
You can open QUenc and try it. You'll find a shortcut in the AVStoDVD program group.
If you deinterlaced your footage, this is almost certainly where you lost some quality.
How does the mpeg-2 you produced from the intermediate file compare to each other ?
Perhaps you should look into dealing with the logo in avisynth and re-interlace. If you can get the script right,
open it directly in the mpeg-2 encoder. Skip the intermediate file.
When the m2v is created author it with AVStoDVD.
I was just wondering if you could retain the interlace. Encode it outside of AVStoDVD - in HCenc directly.
Beyond that, to get much further with this, perhaps you could provide some sample of the source, and the intermediate file.
Regarding this question, which I worded rather me badly :
"How does the mpeg-2 you produced from the intermediate file compare to each other ?"
I'm trying to get a feel for where the quality loss is. I was trying to ask how does the final mpeg-2 (or DVD ) compare to the
intermediate file in terms of the quality?