[FFmpeg-devel] [PATCH] avformat: set start_time_realtime when demuxing

[Marton Balint]

On Tue, 14 Jun 2022, Gyan Doshi wrote:

>
>
> On 2022-06-14 01:51 pm, Marton Balint wrote:
>> 
>>
>>  On Tue, 14 Jun 2022, Gyan Doshi wrote:
>>
>>>  Add new flag AVFMT_START_REALTIME for the couple of demuxers that set it
>>>  internally.
>>
>>  I don't think this is the same semantics.
>>
>>  start_time_realtime is the time when the stream was originally captured,
>>  and not when the stream was received. So you can't simply use av_gettime()
>>  in the demuxers for that field.
>
> I saw that in the rtsp read_packet. I thought of adding a new field but think 
> the semantics are close enough to serve the purpose of a rough sync so I 
> added the flag for the demuxers that receive origin timestamp.
>
> I can update the doxy to record this difference. Or should I add a new field?

I prefer a new field.

Thanks,
Marton