Forum Archive Home -> Programming -> MPEG2 specs to make my own library ;)
MPEG2 specs to make my own library ;) | ||
| JoseD posted 2008 Jan 23 17:32 | ||
| Ok, this is gonna sound too pretentious but I'd like to check out the MPEG2 specification to try to make my own en/decoder library, as a hobby project.
I've done a huge google search but couldn't came up with anything other than some pimps trying to get me to buy the specification! I mean it must be downloadable from the official site somewhere right ? Regs José | ||
| freebird73717 posted 2008 Jan 23 17:43 | ||
| You might post this question at the http://forum.doom9.org as there are some encoder programmers who post there often.
Good Luck! | ||
| redwudz posted 2008 Jan 23 17:58 | ||
| That sounds more like you are looking for source code. MPEG-2 specs are fairly variable.
But you could start with this Wikipedia page, if you haven't been there: http://en.wikipedia.org/wiki/MPEG-2 Follow what links you can. The format is covered by patents, so you may just be able to find 'white papers' about various MPEG-2 subjects. Even MS doesn't include MPEG-2 with most of their OS's to avoid the patent fees. :) | ||
| aedipuss posted 2008 Jan 23 18:01 | ||
| most spec books that i know of are anything but free. the cd/vcd/svcd/dvd spec books have never shown up for free anywhere in the 10 years i've been around the movie scene. can't recall seeing an mpeg spec book either. | ||
| disturbed1 posted 2008 Jan 24 23:10 | ||
| Here you go - http://www.mpeg.org/MPEG/video/mssg-free-mpeg-software.html
Include the source code for the reference mpeg2 encoder and decoder. You may also want to poor over the source code of bbmpeg and the bbtools, as well as mjpegtools mpeg2enc which are all based on the above sources. | ||
| hank315 posted 2008 Jan 25 02:38 | ||
| You can download the MPEG2 spec here | ||
| LarryEvilsizer posted 2008 Jan 25 09:40 | ||
| Neuron2 has a library containing a free version of the MPEG2 spec on his site at http://neuron2.net/. Don't know if it is the latest and greatest, but I found it usefull in conjuction with the source code disturbed1 mentioned.
Select "Library" from menu on the left. Has the MPEG1 spec as well. Good luck. | ||
| JoseD posted 2008 Jan 26 18:23 | ||
| Thanks for all the cool links! I'll check it out...:) | ||
| gr3go posted 2009 Mar 04 11:43 | ||
Did you managed to develop something? I would need to develop a hardware accelerated mpeg encoder, a implementation for cpu would help me a lot! Regards, Gr3go | ||
| JoseD posted 2009 Sep 03 12:06 | ||
| @gr3g0
Thanks for the interest. The actual decoding (what matters!) is still unfinished because I don't think it makes sense to develop something that won't be different/better from what is already out there and my free time is scarce. So I'm reading bits here and there for what algorithms people normally use etc... to think of ways to improve it. I think there is space for improvement because people nowdays have become too used to stupid amounts of processing power. But it will take a while if it's ever finished TBH. | ||
| creamyhorror posted 2009 Sep 03 21:11 | ||
| This old post from an x264 developer's blog may be of interest:
Introducing Photon (an attempt at writing an MPEG-2-like format) |
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