[mythtv-users] Nuvexport problems ffmpeg finishes immediately.

[Brad Fuller]

Brad Fuller wrote:

> Chris Petersen wrote:
>
>>> I did. Doesn't show me anything even with --showprogress (I removed 
>>> the 2>&1)
>>> I assume that it's sitting there waiting for ffmpeg to pickup the 
>>> audio and video streams from the tmp dir. Does mythranscode create 
>>> the audio and video fifos in a tmp directory?
>>
>>
>>
>> the "waiting for mythtranscode to set up fifos" (which was the last 
>> thing you said nuvexport printed before failing) comes from 
>> nuvexport, and means that mythtranscode has not yet created the 
>> fifo's in the tmp dir.  It won't start ffmpeg until those are created.
>>
>> Or have you moved on to a completely different error?
>
>
> no, not a different error. But, look at this:
>
> -- 
> Now encoding:  The Office:  Performance Review
> Encode started:  Thu Nov 17 15:10:58 2005
> First pass...
> Waiting for mythtranscode to set up the fifos.
> Starting ffmpeg.
> processed:  0 of 53820 frames (0.00%),   0.00 fps
> ffmpeg finished.
> processed:  0 of 53820 frames (0.00%),   0.00 fps
>
> ffmpeg died early.Please use the --debug option to figure out what 
> went wrong.
> -- 
>
> To me, this looks like there's something wrong with ffmpeg. Hey wait a 
> minute, Why does -4mv do in ffmpeg? I don't see it in ffmpeg.pm. This 
> is the 1st pass --debug:
>
> $ /bin/nice -n19 ffmpeg -y -f s16le -ar 48000 -ac 2 -i 
> /tmp/fifodir_4835/audout -f rawvideo -pix_fmt yuv420p -s 480x480 
> -aspect 1.33333333333333 -r 29.970 -i /tmp/fifodir_4835/vidout -aspect 
> 1.33333333333333 -r 29.970 -deinterlace -croptop 10 -cropbottom 10 
> -cropleft 10 -cropright 10 -padleft 2 -padright 2 -s 620x464  -vcodec 
> xvid -b 960 -minrate 32 -maxrate 1920 -bt 32 -bufsize 65535 -lumi_mask 
> 0.05 -dark_mask 0.02 -scplx_mask 0.5 -4mv -part -pass 1 -passlogfile 
> '/tmp/xvid.4835.log' -f avi /dev/null

So, to answer my own question, -4mv is a switch in the XviD.pm file. 
(and divx.pm)

What is the -4mv switch for?
There is no -4mv switch in my ffmpeg. (there is a -mv4, though)