[FFmpeg-devel] [PATCH] Fix MPEG-TS seek and frame positions in general
Baptiste Coudurier
baptiste.coudurier
Mon Feb 23 22:41:35 CET 2009
On 2/23/2009 1:01 PM, Ivan Schreter wrote:
> Ivan Schreter wrote:
>> Baptiste Coudurier wrote:
>>
>>> Hi,
>>>
>>> Ivan Schreter wrote:
>>>
>>>
>>>> Ivan Schreter wrote:
>>>>
>>>>
>>>>> Ivan Schreter wrote:
>>>>>
>>>>>
>>>>>
>>>>>> Ivan Schreter wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> [...]
>>>>>>> Patch #2: let mpegts format decoder return correct packet positions by
>>>>>>> keeping track of position of first TS packet of a PES packet in
>>>>>>> MpegTSPESFilter.
>>>>>>>
>>>>>>>
>>> I believe AVPacket->pos should be set to the point where a byte seek can
>>> occur for formats allowing it, this can be really useful for application
>>> constructing indexes and/or using AVIndex.
>>>
>>> So in this case I believe AVPacket->pos should be set to the 0x47 byte
>>> containing the start of the PES packet containing the frame.
>>>
>>>
>>>
>> Um, this is the case with the patch...
>>
>> If I look in the ts file, the positions returned point exactly to 0x47
>> byte. Did you see something different in your sample?
>>
>>
> Ping Baptiste/Mans?
Yes, did you address my comment with stream->pos being -1 ?
--
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