[Ffmpeg-devel] [BUGREPORT] ffplay plays video and audio 20% to fast

[Gunnar von Boehn]

Benjamin Larsson wrote:
> Gunnar von Boehn wrote:
> 
> 
>>BUGREPORT: FFplay plays video and audio about 20% to fast.
>>
>>Verified on two Linux x86 installs with most current svn tree.
>>
>>
>>I'll quickly summerize what we know so far:
>>
>>
>>FFplay plays a number of videos much to fast
>>(about 20% to fast) on my Linux desktop machines.
>>All other video players (VLC/MediaPlayer/Realplayer) play the video
>>correctly.
>>
>>Herve has reported that the bug did not show on his MAC OS X.
>>I have verified the bug of FFplay on Linux compiling a fresh svn tree
>>right now.
>>
>>
>>On my two x86 Linux systems (Duron and Athlon64)
>>FFplay plays hunderts of my H264 videos with mp3 sound, about 20% to
>>fast.
>>Problem: The video and sound are to fast. The video seems not to be
>>evenly too fast, it looks like sometimes its a bit faster than 20% and
>>then maybe about normal speed. But this might be related to decoding
>>speed? The audio plays too fast as well, and has bad disorder noises.
>>My linux systems are running Debian Linux Kernel 2.6.9-x1 and Debian
>>Kernel 2.4.26
>>
>>
>>
>>
>>How to repeat:
>>
>>- check out and compile newest ffplay
>>
>>- download test video
>>http://www.greyhound-data.com/movies/IE/SPK/2006/SPK-2006-09-02-HT09.avi
>>
>>- ffplay SPK-2006-09-02-HT09.avi
>>
>>
>>Stats of the test video
>>  Duration: 00:01:02.9, start: 0.000000, bitrate: 475 kb/s
>>  Stream #0.0: Video: h264, yuv420p, 352x224, 25.00 fps(r)
>>  Stream #0.1: Audio: mp3, 24000 Hz, mono, 32 kb/s
> 
> 
> This is a MPEG-2.5 sample rate, the problem could be the handling of those.

I see. Thanks for the quick answer.

What you say sounds like this is easy to fix, is it?
Maybe only misinterpreting the sample speed?


Cheers
Gunnar