[mythtv-users] mplayer (or ffplay or vlc) + mythtv .nuv = no video?

Andrew Leahy aleahy at knox.edu
Sun Feb 11 17:23:34 UTC 2007


I was under the impression that ffmpeg had support for playing an rtjpeg 
.nuv videos produced by mythtv.  However, when I try playing such a file 
using mplayer (which uses ffmpeg for the decoding and specifically notes 
its "NuppelVideo/MythTV demuxer and RTJpeg decoder", I get a blank 
screen for video (although sound works fine).  The same thing happens 
with the ffplay decoder included with ffmpeg.  Here's the output from 

Playing 2000_20070210103000.nuv.
NuppelVideo file format detected.
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 32000 Hz, 2 ch, s16le, 96.0 kbit/9.38% (ratio: 12000->128000)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffnuv] vfm: ffmpeg (NuppelVideo)
alsa-init: using device default
alsa: 48000 Hz/2 channels/4 bpf/65536 bytes buffer/Signed 16 bit Little 
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
VDec: vo config request - 480 x 480 (preferred colorspace: Planar YV12)
VDec: using Planar I420 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 480x480 => 480x480 Planar I420
alsa-uninit: pcm closed 0.014 ct: -0.012  43/ 43 13%  1%  2.0% 0 0

Exiting... (Quit)

vlc doesn't even get that far, crashing with a "main decoder error: no 
suitable decoder module for fourcc `RJPG'".

The problem occurs on both FC5 and FC6 systems.  (On the FC5 system, the 
ffmpeg version is 0.4.9-0.23.20060817 from livna.) Am I missing 
something (e.g., command line options) here?  Is there a way to do this 
without transcoding?

Barring this, what is the preferred way to view videos downloaded via 

Thanks for your help.

Andrew Leahy

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