[FFmpeg-devel] [PATCH] When PMT is found, we have found mpegts header information

[elupus]

On Sun, 18 Apr 2010 18:04:48 +0200, elupus wrote:

> On Sat, 17 Apr 2010 14:32:32 -0700, Baptiste Coudurier wrote:
> 
>> On 4/17/10 5:49 AM, elupus wrote:
>> 
>>> They will however totaly be missed if we reduce probesize and pmt shows up
>>> later. But i'll keep it local to xbmc for now, until ffmpeg get's a new
>>> mpegts demuxer :)
>> 
>> Absolutely not, you seem to be confused. Demuxer will keep parsing PMT 
>> and add new encountered streams. You will notice it when the AVPacket 
>> stream_id is new.
>> That's why AVFMT_NOHEADER is set, here is the doxygen about it:
>>      /** Read one packet and put it in 'pkt'. pts and flags are also
>>         set. 'av_new_stream' can be called only if the flag
>>         AVFMTCTX_NOHEADER is used.
> 
> Well what i meant was, for us to speed up starting, we'd have to reduce
> probesize. Whatever size we set will be a guess with no guarantee there
> will be a pmt there. So we get in the situation that we'd have to try
> av_find_stream_info multiple times with successivly larger probesize if we
> want to be able to keep startup delay down, and find streams.

... and find the initial streams.