[Libav-user] frame_size in AVCodecContext is zero when decoding flac
Carl Eugen Hoyos
ceffmpeg at gmail.com
Fri Dec 14 18:33:29 EET 2018
2018-12-14 17:31 GMT+01:00, drwho <drwho at infidigm.net>:
> On 2018-12-14 10:47 a.m., Carl Eugen Hoyos wrote:
>> 2018-12-14 15:57 GMT+01:00, drwho <drwho at infidigm.net>:
>>> (using libavcodec.so.57.64.101)
>>> It appears that the frame_size element in AVCodecContext is not
>>> guaranteed to be none zero either before or after decoding of the first
>>> frame. (it is set before decoding the first frame for mp3)
>> The frame size for mp3 is known, for flac it has to be determined.
>> Are you using the flac parser in your code?
> I'm not sure if I am using the flac parser.
I believe you should: Input frames can have arbitrary size which
breaks decoding without the parser.
(Or it would just fix the issue you see and was originally for seeking,
don't remember atm.)
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