[ATrpms-users] ffmpeg - Floating point exception

[Axel Thimm]

On Tue, Oct 03, 2006 at 11:08:51AM +0200, Walter Hofstetter wrote:
> I came to the conclusion, that it may have to do how ffmpeg is being 
> called by nuvexport.
> When I'm converting a mpeg2 file "manually" it will work...
> 
> For your info that's what nuvexport does:

Hm, maybe ffmpeg is trying to seek in the fifo (but then a floating
point exception???). You could try the following:

a) mythtranscode into a file, then pipe that file into the fifo
b) Pipe mythtranscode to ffmpeg w/o any intermediate fifo

You should also report this upstream to ffmpeg folks. This is now the
very latest code that fails.


> system call:
> mkdir -m 0755 /tmp/fifodir_27887/
> 
> forking:
> /bin/nice -n19 /usr/bin/mythtranscode --showprogress -p autodetect -c 1 
> -s 2006-09-30-12-29-00 -f "/tmp/fifodir_27887/" 2>&1
> 
> forking:
> /bin/nice -n19 ffmpeg -y -f s16le -ar 0 -ac 0 -i 
> /tmp/fifodir_27887/audout -f rawvideo -pix_fmt yuv420p -s 720x576 
> -aspect 1.33333333333333 -r 25.000 -i /tmp/fifodir_27887/vidout -aspect 
> 1.33333333333333 -r 25 -croptop    12 -cropright 14 -cropbottom 12 
> -cropleft  14 -s 320x240  -vcodec mpeg4 -bit_rate '384' -title '1 SF1 - 
> 12:30 PM (Manual Record) - Sat Sep 30 12:30:00 2006' -flags 
> +4mv+trell+loop -aic 1 -mbd 1 -cmp 2 -subcmp 2 -qcompress '0.6' -qmax 
> '51' -max_qdiff '4' -qmin 31 -acodec aac -ar 48000 -async 1 -ab 64 
> '/root/1 SF1 - 12-30 PM (Manual Record) - Sat Sep 30 12-30-00 2006.mp4' 2>&1
-- 
Axel.Thimm at ATrpms.net
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