[MPlayer-dev-eng] [PATCH] Changing audio speed

[The Wanderer]

Oded Shimon wrote:

> On Thu, Jul 21, 2005 at 08:57:01PM +0100, Dean LM wrote:
> 
>> Hi,
>> 
>> I'm not sure whether this has been addressed before, but I have a
>> video with the audio sampled at 22050 Hz, when I try playing it the
>> video plays at the correct speed but the audio is half the speed it
>> should be (i.e. slooow).
> 
> So, umm, you get a HUGE audio-video desync in just a few seconds? And
> all the audio is of low bass because of pitch distortion?..
> 
> I've never seen such a video. Am I understanding you correctly?

I have a few files which exhibit the type of symptoms described (slow,
low-pitched MP3 audio), although the audio in question is 32000 Hz. The
problem currently manifests itself only with afm=ffmpeg; if I use mp3lib
or libmad for audio decoding, the audio is played back properly.

If memory serves, when I reported this at the time it was dismissed as a
known problem with FFmpeg's MP3 decoder, and never followed up on.

-- 
       The Wanderer

Warning: Simply because I argue an issue does not mean I agree with any
side of it.

A government exists to serve its citizens, not to control them.