[Libav-user] infinite loop in avcodec_encode_audio when encoding AAC

[Josh Gargus]

Thanks Jan,

I ran into this in the context of decoding, so I have it taken care of already.  If this was the issue, wouldn't it result in an immediate crash, when an SSEx instruction tries to run on unaligned memory?

Cheers,
Josh



On Aug 6, 2011, at 2:55 AM, jan hölscher wrote:

> One other thing,
> 
> Allways allocate memory with av_malloc instead of malloc and free it with av_free.
> 
> Regards,
> Jan
> 
> Am 06.08.2011 11:19 schrieb "Josh Gargus" <josh at schwa.ca>:
> > I'm also not sure which encoder I'm using. I meant to be using faac, but I think that I may be using Konstantin Shishkov's encoder. How would I tell? 
> > 
> > I'm finding the codec with avcodec_find_encoder(CODEC_ID_AAC). When I try instead calling avcodec_find_encoder_by_name(), it fails with "libfaac" and "libvo_aacenc", and succeeds with "aac". 
> > 
> > Might I have more luck with libfaac or libvo_aacenc?
> > 
> > Cheers,
> > Josh
> > 
> > 
> > On Aug 6, 2011, at 2:00 AM, Josh Gargus wrote:
> > 
> >> On Aug 6, 2011, at 1:39 AM, jan hölscher wrote:
> >>> What value is stored in audioCodec->frame_size, i think it is 0.
> >>> 
> >>> 
> >> 
> >> No, audioCodec->frame_size is 1024.
> >> 
> >> I should also mention that it does not hang immediately… it will encode successfully for several seconds before entering the infinite loop.
> >> 
> >> Cheers,
> >> Josh
> >> 
> >> 
> >>> Regards,
> >>> Jan
> >>> 
> >>> Am 06.08.2011 07:26 schrieb "Josh Gargus" <josh at schwa.ca>:
> >>> > I'm running into a problem that seems essentially the same as:
> >>> > 
> >>> > http://stackoverflow.com/questions/2410459/encode-audio-to-aac-with-libavcodec
> >>> > 
> >>> > … except that I'm already encoding at a far lower bitrate than the threshold that started to cause him problems (I encode at 64000bits/sec, and he was OK below 386000bits/sec).
> >>> > 
> >>> > Has anyone else seen anything else like this? I'll be happy to provide more details if anyone is interested.
> >>> > 
> >>> > Thanks,
> >>> > Josh
> >>> _______________________________________________
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> >> 
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