[FFmpeg-user] Problem trying to convert PAL file to NTSC

[vsethi at iglou.com]

Etienne Buira wrote:

> Do you mean that ffmpeg binary you built is loading package manager
> installed libav{device,filter,format,codec,core,util} ?
> If so, I suggest you to have a close look at what files are from what,
> eventually uninstalling all versions of ffmpeg and looking at configure
> options (builds statically by default on last git version, don't know
> about 0.6.1).

I believe it's grabbing about five Slackware libraries living in /lib
or /usr/lib.   The only libav files in the path are in /usr/local/lib and 
have been placed there by ffmpeg git-31ff9bd (I've returned to this more 
recent version since neither version was working).  

>> > Is that different if you try ffmpeg -f mpeg -i inputfile.mpg ?
>> > (You can try some other formats instead of mpeg, depending which you see
>> > relevant, from the list given by ffmpeg -formats | grep -i mpeg | grep'^ D').
>> 
>> I looked at the list of formats for decoding, but I don't know which 
>> corresponds to what mplayer says about the file:
>> 
>>   MPEG-PS file format detected
>
> That is the container format, so that should be handled by the 'mpeg'
> demuxer (thus, try the suggested line).

Yes, it's different but not more successful.  Now I'm getting the output
below.  Apparently I need to specify more parameters.  What does it
want for "container frame rate"?  Thanks for helping a newbie.

==========================================================================

ffmpeg -f mpeg -i image.mpg
FFmpeg version git-31ff9bd, Copyright (c) 2000-2011 the FFmpeg developers
  built on Mar 12 2011 11:21:15 with gcc 4.1.2
  configuration: 
  libavutil    50. 39. 0 / 50. 39. 0
  libavcodec   52.113. 2 / 52.113. 2
  libavformat  52.102. 0 / 52.102. 0
  libavdevice  52.  2. 3 / 52.  2. 3
  libavfilter   1. 76. 0 /  1. 76. 0
  libswscale    0. 12. 0 /  0. 12. 0
[mpeg @ 0x8b8f600] max_analyze_duration reached
[mpeg @ 0x8b8f600] Further flags set but no bytes left
    Last message repeated 1 times
    Last message repeated 2 times
    Last message repeated 3 times
Seems stream 0 codec frame rate differs from container frame rate: 50.00 (50/1) -> 5000.00 (5000/1)
    Last message repeated 3 times
Input #0, mpeg, from 'image.mpg':
  Duration: 00:00:02.73, start: 0.066600, bitrate: -2147483 kb/s
    Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576 [PAR 16:15 DAR 4:3], 9282 kb/s, 25 fps, 5k tbr, 90k tbn, 50 tbc
    Stream #0.1[0x20]: Subtitle: dvdsub
    Stream #0.2[0x80]: Audio: ac3, 48000 Hz, stereo, s16, 384 kb/s
    Stream #0.3[0x1ce]: Audio: mp2, 0 channels
    Stream #0.4[0x1d1]: Audio: mp2, 0 channels
    Stream #0.5[0x1d7]: Audio: mp2, 0 channels
At least one output file must be specified