[FFmpeg-devel] [PATCH v3] avformat/hlsenc: add hls_flag option to write segments to temporary file until complete

[Steven Liu]

2017-02-05 4:38 GMT+08:00 Bodecs Bela <bodecsb at vivanet.hu>:

>
>
> 2017.02.04. 20:45 keltezéssel, Hendrik Leppkes írta:
>
>> On Sat, Feb 4, 2017 at 6:55 PM, Aman Gupta <ffmpeg at tmm1.net> wrote:
>>
>>> From: Aman Gupta <aman at tmm1.net>
>>>
>>> Adds a `-hls_flags +temp_file` which will write segment data to
>>> filename.tmp, and then rename to filename when the segment is complete.
>>>
>>> This patch is similar in spirit to one used in Plex's ffmpeg fork, and
>>> allows a transcoding webserver to ensure incomplete segment files are
>>> never served up accidentally.
>>>
>> Wouldnt a segment only show up in the playlist when its finished? How
>> can they be served accidentally?
>>
> the segment file names are predictable.
> In live streaming enviroment somebody predicting the segment name may see
> the program some seconds earlier than any other viewer by downloading
> continously the unpublished segment. (with one segment duration seconds
> earlier)
> if the currently writed segment name is constant you may prohibit to acces
> it in web server config
>
> - Hendrik
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>
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