[FFmpeg-devel] [PATCH] avformat/hlsenc: program_date_time and append_list flags conflict

[Steven Liu]

> 在 2020年1月19日，17:20，Steven Liu <lq at chinaffmpeg.org> 写道：
> 
> 
> 
>> 在 2020年1月19日，03:31，Bodecs Bela <bodecsb at vivanet.hu> 写道：
>> 
>> sorry for missing patch file, here it is.
>> 
>> Bela
>> 
>> 
>> 2020.01.18. 18:56 keltezéssel, Bodecs Bela írta:
>>> Dear All,
>>> 
>>> 
>>> When program_date_time flag is present, in m3u8 playlist file each
>>> segment has a corresponding EXT-X-PROGRAM-DATE-TIME value. The initial
>>> program-date-time value is the actual current time at init and
>>> each new segment increments this value by its duration. When append_list
>>> flags is also present, existing playlist parsing by hls_append_segment
>>> treats existing segments as new segments regarding the program-date-time
>>> calculation. But it should not do that, because this way all  the real
>>> new segments' EXT-X-PROGRAM-DATE-TIME values will be shifted erroneously
>>> by the sum duration of existing segments. Instead it should have
>>> decremented the initial program-date-time value by its duration. This
>>> would ensure that the first new segment's program-date-time value had
>>> the current time as it is expected.
>>> This patch corrects this behaviour and prevent existing segments to
>>> increment the value of initial_prog_date_time variable but decrements
>>> it.
>>> 
>>> 
>>> please review this patch!
>>> 
>>> thank you in advance,
> LGTM
Applied
>>> 
>>> Bela
>>> 
>>> 
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>> <0001-avformat-hlsenc-program_date_time-and-append_list-fl.patch>_______________________________________________
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> 
> Thanks
> Steven
> 
> 
> 
> 
> 
> 
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Thanks
Steven