Please don't top post on this list On Tue, 2010-10-05 at 09:09 -0500, Ruslan Georgiev wrote: > Thanks a lot Tomas, > > Ffprobe says: > Format detected only with low score of 25, misdetection possible! > c:\..\<filename>: Operation not permitted > > I have found only the 0x000 0x000 0x001 0x0b6 pattern that identifies a frame > in MPEG-4. I don't know if it's encrypted or not. I am trying to peek as much > as I can from the format before going into a discussion with their > engineering. > How can I identify the byte patterns for ftyp and moov? > > Thanks, > r_georg > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Tomas Härdin > Sent: Tuesday, October 05, 2010 9:53 AM > To: Libav* user questions and discussions > Subject: Re: [libav-user] Help with demuxing > > On Tue, 2010-10-05 at 08:17 -0500, Ruslan Georgiev wrote: > > I need to implement a demuxer for a proprietary MPEG-4 container. I think > > that it's MPEG-4 based on the information provided by MediaInfo. How do I > > go identifying the stream start and container info? > > Thank you very much in advance. > > > > Regards, > > r_georg > > What does ffprobe say? Have you looked at the file in a hex editor and found > the ftyp and moov atoms? Is it encrypted in any way? Finally, are you allowed > to upload it? > > /Tomas
I assumed by "MPEG-4" you meant its variant of the quicktime container, also known as .mp4. It sounds more like you have a raw H.264 stream, but that should work fine in ffprobe/ffmpeg/ffplay. Maybe if you post a bit more hex, like the first dozen lines from hexdump, someone would be able to say more. /Tomas
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