[ATrpms-users] ffmpeg - Floating point exception - kind of solved...

[Walter Hofstetter]

Axel,

I got a hint from mythtvtalk.

************************
Had similar problem, apparently this has to do with mplayer 10-56. Try 
installing mplayer 1.0-54_pre8. Worked for me. Found this fix at: 
http://www.gossamer-threads.com/lists/mythtv/users/230478#230478
************************

That actually solved my issue with the FPE (downgrading mplayer to 
..-54_pre8).
Unfortunately I'm stuck on the next issue.

The sound is out of sync - audio is about twice as long as the video stream.
I assume this might be another parameter glitch with ffmpeg....

Regards, Walter


Axel Thimm wrote:
> 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
>>