Re: [Mjpeg-users] full-quality Quicktime

[Casper Koshinsky]

Bernhard Praschinger wrote:
lavrec works great and drops _no_ frames during recording of a single avi,
'lavrec -f a -i n -a 0 -q 100 -d 1 -t 3600 -w 1hrfilm.avi'
but it loses a dozen or so frames each time it opens a new file (using
the %nnd numbering feature).  So I'd try
'lavrec -f q -i n -a 0 -q 100 -d 1 -t 3600 -w 1hrfilm.qt'
but this dies immediately with
**ERROR: [lavrec] Error writing to output file 1hrfilm.qt: Internal:
broken JPEG format
   

It could be a problem with the 100% setting. 
Try a quality as "low" as 70-90%. 

Which version of the mjpegtools and which distribution do you use ? 
 

I've tried qualities between 10-90% with same error msg.
It's mjpegtools v. 1.6.2-r3 compiled from source on a Gentoo system 
running kernel 2.6.7 and capturing to an ATA100 disk partitioned as 
reiserfs.

++ WARN: [lavrec] Closing file(s) and exiting - output file(s) my not be
readable due to error
No lower quality (e.g., -q 50) gets past this.  It is simply the '-d 1'
that it doesn't like.
   

Does wit work with -d 1 -q 70 ?
 

Nope :-(
Does anyone know if libquicktime 0.9.2 --> 0.9.3 fixes this?  Or was
there some other way to get around the avi 2GB limitation without
sacrificing resolution?
   

I have the 0.9.2 installed on my system (x32) and can record to a larger
file than 2GB. I would guess that your filesystem or something else
(mountoptions, really old glibc) is having a problem with files large
files. Are you able to create files larger than 2GB with other programms
(like dd from /dev/null) 
 

I only meant the fsize limit for avi files noted in the docs.  Thanks, 
tho' -- C


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