converting avi files to ntsc dvd with ffmpeg core dumps
Wes Morgan
morganw at chemikals.org
Wed Aug 22 18:46:07 PDT 2007
On Wed, 22 Aug 2007, Dave wrote:
> Hello,
> I've got some .avi files i believe they are either divx or xvid and i am
> trying to convert them to ntsc dvd video so i can play them on a standard dvd
> player. I'm running FreeBSD 6.2-p3 or 4, and an up to date ports tree, My
> ffmpeg is version 2007.07.12_3. During the process of conversion ffmpeg core
> dumps, being not a programmer i do not know what to do about it and would
> appreciate any suggestions. The specific cmdline i'm using is:
>
> ffmpeg \
> -i ${VIDEO}.avi \
> -pass 2 \
> -target ntsc-dvd \
> -aspect 4:3 \
> ${VIDEO}.mpg
>
> The first time i ran this i got the msg:
>
> ffmpeg2pass-0.log: No such file or directory
>
> googling revealed to run first pass 1 then rerun with pass 2, this seemed
> like a long way, but i did it. When running with pass 1 that's when it core
> dumped. The log file created is empty. Output during the conversion process
> seems to indicate that this avi has no frames, audio, or video, but i know
> this to be incorrect, i ran a transcode on it for over a day got output and
> finally decided it was going to slow. I am open to suggestions, any
> additional information needed, i do have a copy of the .core file, and a
> typescript of the entire conversion process, anything else let me know.
This isn't really a direct answer to your problem, but if you want to
convert avi to dvd, I recommend taking a look at the ports tovid, devede,
and/or avidemux2. Provided that you don't require a command-line
interface, I would go with devede or avidemux2. The tovid port seems to
have a lot of problems with freebsd, but it can be used without the gui.
Avidemux2 will do the two-pass encoding, whereas the others do not (yet)
However, since the dvd bitrate is likely so much higher than your avi, a
two-pass encoding is probably overkill. My transcodes always seem to end
up far under the limit of a DVD5 -- but hey that could be operator error.
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