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

[vsethi at iglou.com]

belcampo wrote:

>>> I wrote originally:
>>>
>>> I have a video file in PAL format currently sitting on the hard drive.
>>> Mplayer 4.1.12 under X11 is able to play it (although slowly).
>>> However, ffmpeg cannot do anything with it and complains about the
>>> file header.
>>>
> Your version seems be to be very up-to-date, so that shouldn't be the 
> reason, but trying with an other/older version should not hurt.
> What do you mean with "(although slowly)" ?

The image that mplayer generates is clear, but playback is in slow motion.
Since I'm an mplayer newbie as well, I don't know how to persuade it to
speed up (if indeed it can).

This is what mplayer 4.1.2 says about the file:

========================================================================
MPEG-PS file format detected.
VIDEO:  MPEG2 720 X 576 (aspect 2) 25.000 fps 8648.0 kbps (1081.0 kbyte/s)
Opening video decoder: [mpegpes] MPEG 1/2 video passthrough
Could not find matching colorspace -retrying with -vf scale ...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
Try appending the scale filter to your filter list.  
e.g. -vf spp.scale instead of -vf spp.
V decoder init failed:(
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffmpeg2] vfm: ffmpeg (FFmpeg MPEG-2)
Starting playback...
Movie-Aspect is 1:33:1 - prescaling to correct movie aspect.
VO: [x11] 720 x 576 => 768 x 576 Planar YV12
[swscaler @ 0x899bae0] using unscaled yuv420p -> brga special converter
V: 2.7 183000/183000 121% 188% 0.0% 0 0 $<50>
========================================================================

Which older version do you recommend trying and where does one get it?

Would it be relevant that the mplayer version is older than the ffmpeg
version?

Here again is the ffmpeg output on this file:

>
> ========================================================================
>
> ffmpeg -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
> [NULL @ 0x8b8f600] Format detected only with low score of 1, misdetection possible!
> [mp3 @ 0x8b91ea0] Header missing
> Last message repeated 1 times
> Last message repeated 2 times
> Last message repeated 3 times
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> Last message repeated 35 times
> Last message repeated 35 times
>
> [mp3 @ 0x8b8f600] Estimating duration from bitrate, this may be inaccurate
> Input #0, mp3, from 'image.mpg':
> Duration: N/A, start: 0.000000, bitrate: N/A
> Stream #0.0: Audio: mp1, 0 channels, s16
> At least one output file must be specified
>