Ticket #2309 (new defect)
Continuing -async issues
|Reported by:||agni451||Owned by:|
|Blocking:||Reproduced by developer:||no|
|Analyzed by developer:||no|
Summary of the bug:
How to reproduce:
% ffmpeg.exe -v verbose -y -i "K:\!TEST\Dsmall.ts" -q:vscale 0 -mbd 2 -c:a ac3 -ab 448k -ac 6 -async 48000 "K:\!TEST\bad.avi" ffmpeg version f6fff8e (64-bit) built on Feb 26 2013
I downloaded both the 2-25-2013 and 2-26-2013 static builds and tested a bunch of files with them, and they all seemed to work great. Unfortunately, I stumbled upon a new glitch that doesn't occur in builds 066739f (2-24-2013) and earlier. I uploaded a 1:40min sample file along with short [-v verbose] and long [-v verbose -loglevel 99] outputs running under 066739f (1-29-2013) and f6fff8e (2-26-2013). Find this in "Ticket2210new.7z" in /incoming. The 1-29 build handles the error approx 11sec in just fine, but the 2-26 build goes crazy and adds too much silence (~12sec worth). Oddly enough, there is NO channel layout change in this sample to deal with, just a standard gap error and timestamp "drift".
The exact command I used was
ffmpeg.exe -v verbose -y -i "K:\!TEST\Dsmall.ts" -c:v mpeg2video -q:vscale 0 -mbd 2 -c:a ac3 -ab 448k -ac 6 -async 48000 "K:\!TEST\D_FIX.ts"
but outputting an avi shows the audio error immediately:
ffmpeg.exe -v verbose -y -i "K:\!TEST\Dsmall.ts" -q:vscale 0 -mbd 2 -c:a ac3 -ab 448k -ac 6 -async 48000 "K:\!TEST\bad.avi"
Basically ffmpeg now handles channel layout changes fine (as far as my testing has confirmed), but now it occasionally has problems with gap and timestamp drift errors. I say occasionally because I ran the sample I gave in comment 18 (it has channel changes AND gaps AND timestamp drift) and it didn't have a problem. I'm hoping you can see why one would have a problem and not the other. If you need a new copy of the sample from comment 18, I can re-upload it.