[FFmpeg-devel] MPEG TS encoding problem on change from stereo to mono, pay for fix

[Andreas Unterhuber]

Hi Reimar,

thanks for your feedback and advice. Do you find the time to write such a patch? It seems there is no other interest around here... 

Best regards,
Andreas

Am 18.11.2010 um 21:07 schrieb Reimar D?ffinger:

> On Thu, Nov 18, 2010 at 05:09:20PM +0100, Andreas Unterhuber wrote:
>> I published at https://roundup.ffmpeg.org/issue2292 a bug that causes strange noise after change of mono to stereo or similar. 
>> If you can commit a fix to make changing audio channel rates in the demo file (attached in the bug tracker or I will provide another bigger file) work correctly, I'll pay $350.
> 
> Tip for anyone who needs money:
> Look at ffmpeg.c, line 804:
>    if (ost->audio_resample && !ost->resample) {
> This condition is insufficent, ost->resample cannot be re-used
> but must be freed and re-created if the number of channels
> from the decoder changed.
> Strictly, this all also should handle the channel mask properly,
> but that is work beyond this bug-fix.
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