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| curmudgeon |
| Posted: Dec 26 2002, 07:03 AM |
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Unregistered
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W2K, fast processor, plenty of memory and disk, VirtualDub 1.4.13, DivX 5.0.2
While compressing a number of fifteen and thirty second video clips today,
I noticed that about one-third of them had a size about 400K bigger than
I expected (with the settings I use, I get a file very close to 1,400,000
bytes for a fifteen second .avi with audio).
At first, I thought I had some setting wrong (although I never change any
of the compression parameters), so I simply redid the ones that came out
"too big." One still came out too big (about 1,800,000 - the exact same
size as before). I compared the two files (not the same, even though I
used the same settings). I loaded up the raw YUY2 file, and promptly
saved it (with the DivX codec) three times in succession without changing
any settings or even reloading the file. As I watched the processing, the
progress projected a file size of about 1,400,000 bytes the entire time, but
at the last instant, the file again jumped to 1,800,000 bytes the first two
times (one of those files matched one of the first two, the other did not
match any of the prior files). The third time in quick succession (and the
fifth time overall), VirtualDub finally spit out a file the size I expected in the
first place. All of the files looked normal when played.
It surprised me a little that I did not get identical files when rerunning the
program with the same parameters, but the extra filesize seemed even
more confusing (for some of the thirty second clips, I got a filesize of about
3,200,000 bytes when I expected, and usually get, a file about 2,800,000
bytes). I will watch this more closely in the future if you want additional
information. |
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| fccHandler |
| Posted: Dec 26 2002, 08:56 AM |
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Administrator n00b
Group: Moderators
Posts: 3961
Member No.: 280
Joined: 13-September 02
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You must be one of those people who actually sits and watches the status window while it's encoding (yes, I do too until I fall asleep). 
Clearly what you're describing is (or should be) impossible. Is there any way that you could post links to the file(s) you are compressing and exactly what settings you are using?
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May the FOURCC be with you... |
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