[Ffmpeg-devel] ffmpeg / libavutil casues SIGFPE when called from nuvexport

[Christopher Halse Rogers]

On 10/4/06, Walter Hofstetter <walter.hofstetter at netwho.com> wrote:
> I'm running mythtv for a while and wanted to use the myth2ipod script to
> easily get access to my recordings on my 5g ipod.
>
> Here's a backtrace from ffmpeg:
>
> Starting program: /usr/bin/ffmpeg -y -f s16le -ar 0 -ac 0 -i
> /tmp/fifodir_5271/audout -f rawvideo -pix_fmt yuv420p -s 720x576 -aspect
> 1.33333333333333 -r 25.000 -i /tmp/fifodir_5271/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 -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

That is surely wrong?  It's saying the input audio sample rate is
0KHz, and there are 0 channels of audio!

Also, assuming that is a recent build of FFmpeg, the "-bit_rate 384"
flag is asking for the bit rate to be 384 *bits* / sec.  The units
have recently changed.  Changing that to "-bit_rate 384k" should
improve the video quality somewhat ;).

To fix the audio, maybe you should pass in the correct values to -ar and -ac?