[mythtv-users] XvMC and libmpeg2 to be dropped in 0.25

Michael T. Dean mtdean at thirdcontact.com
Fri Dec 3 21:00:10 UTC 2010

  On 12/03/2010 01:19 PM, Jarod Wilson wrote:
> On Dec 3, 2010, at 1:12 PM, nospam312 wrote:
>> Can you explain what libmpeg2 does?
> Its an alternative mpeg2 decoding engine to the primary ffmpeg one.

that hasn't been updated for years, that doesn't successfully decode 
many MPEG-2 streams that exist today, and that has always broken 
captions/subtitles (meaning you can't get them with libmpeg2).

It's what people who flip switches without understanding them may use, 
but anyone with a working MythTV uses ffmpeg for decoding MPEG-2.  :)

At one point the description said "faster", so some users chose it (then 
reported bugs when things, like captions, didn't work).  Here's what the 
MythTV help text for the option now says:

libmpeg2 is slower on almost all processors than ffmpeg and breaks 
caption decoding. Use at your own risk!

(So, anyone now using it needs to not.)


More information about the mythtv-users mailing list