[FFmpeg-devel] [PATCH] RTMP seek support

[Howard Chu]

Howard Chu wrote:
> Howard Chu wrote:
>> Howard Chu wrote:
>>> Howard Chu wrote:
>>>> This is a first stab at getting seek working on an RTMP stream.

>>>> I've been testing with this stream:
>>>>
>>>> gdb --args ./ffplay_g
>>>> "rtmp://fms.scctv.net/annenberg//vod/world_of_chemistry_01
>>>> swfurl=http://www.learner.org/vod/swfs/player-licensed.swf
>>>> pageurl=http://www.learner.org/vod/vod_window.html?pid=793"
>>>
>>> Thanks to a tip from uau this is now working.

> Note that the did_rseek flag wouldn't even be needed if the rest of flvdec
> always read from the start of a frame, instead of reading from the end of the
> previous frame, as it currently does. But I took a look at fixing that and the
> diff would be pretty large, so I chose this approach instead.

It turned out to be not too bad to correct that, as this patch shows.

> The patch for aviobuf.c is going to be needed regardless - you shouldn't be
> setting "s->pos = s->seek()" unconditionally, since s->seek may not be
> implemented. Storing a -32 in s->pos is bound to screw something else up.

-- 
   -- Howard Chu
   CTO, Symas Corp.           http://www.symas.com
   Director, Highland Sun     http://highlandsun.com/hyc/
   Chief Architect, OpenLDAP  http://www.openldap.org/project/
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