[mythtv-users] Playing back transcoded files (transcoded to Mpeg-4)
ffrr at tpg.com.au
Wed Apr 5 07:39:24 UTC 2006
My mythtv install is Knoppmyth R5B7, so that's 0.19 with fixes. My TV
card is DVB-T so recordings are Mpeg2-TS.
Last night I thought I'd experiment with transcoding to mpeg4 so I could
fit more shows on my 250GB disk. I set up the profile for autodetect
from MEG2, and all I did was to change the main setting from rtjpeg to
mpeg4. I left everything at the default setttings. Then I selected a
one hour show, using the front end, and told it to transcode.
The result - a one hour show (with extra before/after) went from 3.5GB
to 1.6GB. That's good. Now I am trying to play back the file
remotely. I normally do this using NFS mapped drives, and the 'pretty'
symlinks to launch gxine to play them - although Kaffeine and others
work as well.
Now, all I get is distorted scratchy sounds and no picture. I went to
the actual file to try it directly, and discovered it was now an .nuv
file (started out as an mpg file). Shouldn't MPEG4 files use mp4 or mpg
extensions? Anyway, it still wouldn't play in gxine, so I tried playing
it with VLC. This works (although it was stretched tall until I
manually switched VLC to 16:9 - but that may be a quirk of VLC itself)
So, what do I need to be able to play these files in gxine? I thought I
had all the usual codecs (installed from a pack downloaded from mplayer
HQ about 6 months ago). Is myth using some special codec to transcode
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