[FFmpeg-devel] m2ts blueray demux issues

[Måns Rullgård]

Michael Niedermayer <michaelni at gmx.at> writes:

> On Mon, Aug 25, 2008 at 11:52:46AM -0700, Jesse Rosenzweig wrote:
>> Some blueray m2ts (mpeg2 transport stream) files are causing libavformat to
>> not find any stream info (hangs in av_find_stream_info).  
>> 
>> I thought this may be due to the very large file size of 31 G, so I chopped
>> it down to the first 10Meg.  In this case the stream info api now returns,
>> but with the message "Could not find codec parameters" from mpegts.
>> 
>> M2ts files from blueray have an extra 4 bytes for every TS packet described
>> in section 3.1 here 
>> http://www.blu-raydisc.com/Assets/Downloadablefile/2b_bdrom_audiovisualappli
>> cation_0305-12955-15269.pdf
>> And I don't see any adjustments in the code for this "feature" of blueray
>> transport streams.
>
> look:
> #define TS_FEC_PACKET_SIZE 204
> #define TS_DVHS_PACKET_SIZE 192
> #define TS_PACKET_SIZE 188
>
> seems to me as if there is code for dealing with various packet sizes

Yes, there is.  There's something else that's strange about that
file.

-- 
M?ns Rullg?rd
mans at mansr.com