[FFmpeg-devel] Patch for LPCM in mpeg-ts (as seen on bluray)

[Frank Barchard]

On Thu, Jul 23, 2009 at 9:13 AM, Christian P. Schmidt <schmidt at digadd.de>wrote:

> The attached patch brings LPCM support for mpeg-ts streams as it is found
> on BluRays. Patching probably requires patch -p2.


I previously googled lpcm support and found reference to Baptist doing an
ffmpeg patch for it?  It didnt seem to make it in though.


> -                            switch (p[2] & 0x0f) {
> -                            case 1:
> -                                pes->st->codec->sample_rate = 48000;
> -                                break;
> -                            case 4:
> -                                pes->st->codec->sample_rate = 96000;
> -                                break;

Is there 44100?  What are the other values? your switch doesnt handle?

>
> -                            switch ((p[2] >> 4) && 0x0f) {
> -                            case 1: // 1/0, untested
> -                            case 3: // 2/0
> -                                pes->st->codec->channels = 2;
> -                                break;

If I understand the comment, 1/0 means mono?  You should fill in the correct
number of channels or bad things will happen.
svn diff is the safest bet.  cheers