On 11/9/2016 7:36 AM, Anton Khirnov wrote:
> Quoting James Almer (2016-11-02 21:02:30)
>> aac_adtstoasc makes the aac extradata available only after the first packet
>> is filtered, and as packet side data.
>>
>> Assume extradata will be available as part of the first packet if
>> avpriv_mpeg4audio_get_config() fails the first time due to missing extradata
>> and reserve space for the OutputSampleRate element in the Tracks master.
>>
>> Signed-off-by: James Almer <jamr...@gmail.com>
>> ---
>> No functionality change compared to the previous versio, just some
>> refactoring
>> to better accommodate the following patch.
>>
>> libavformat/matroskaenc.c | 78
>> +++++++++++++++++++++++++++++++++++++++++++----
>> 1 file changed, 72 insertions(+), 6 deletions(-)
>>
>> diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
>> index cfced72..68c91fa 100644
>> --- a/libavformat/matroskaenc.c
>> +++ b/libavformat/matroskaenc.c
>> @@ -98,6 +98,8 @@ typedef struct MatroskaMuxContext {
>> int64_t cluster_pts;
>> int64_t duration_offset;
>> int64_t duration;
>> + int64_t sample_rate_offset;
>> + int sample_rate;
>
> This assumes there is at most one AAC track in the file, which is not
> necessarily true. From a quick glance it seems to be rather
> straigtforward to just move this to the per-track context.
Mmh, that's true. Same with the second patch.
Thanks for pointing it out. Will see about making it work in per track
basis.
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