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Pri jednom dekoderu je to dost obtizni ukol. gnutv tohle bohuzel neumi.
Hlavni omezeni ze lze nahravat jen programy z jednoho streamu.
Ale nasel jsem jinou aplikaci ktera to umi: dvbstream.
Sice je ta utilitka 5 let stara, dost prasacky napsana, ale fungje .
Problem je, ze nerozumi klasickemu channles.conf, ale parametry se museji specifikovat pres prikazovy raked (ale neni proble napsat wrapper, ktery by ty parametry prepsal). Taze napr. tenhle prikaz nahreje programy Nova + Nova Cinema (v Praze):

./dvbstream -f 634000 -qam 64 -gi 4 -cr 2_3 -bw 8 -tm 8 -o:/home/chochi/f1.ts 401 411 -o:/home/chochi/f2.ts 101 111

Nebo je moznost nahrat cely stream (v tomhle pripade nefunguje parametr -o):

./dvbstream -f 634000 -qam 64 -gi 4 -cr 2_3 -bw 8 -tm 8  -o 8192 > ~/f1.ts

Pak je v tom ale peknej bordel :

$ mplayer -demuxer lavf ~/f1.ts 
MPlayer SVN-r29796-4.3.2 (C) 2000-2009 MPlayer Team

Playing /home/chochi/f1.ts.
libavformat file format detected.
[mpeg2video @ 0x2f17de0]skipped MB in I frame at 18 6
[mpeg2video @ 0x2f17de0]ac-tex damaged at 33 27
[mpeg2video @ 0x2f17de0]Warning MVs not available
[mpeg2video @ 0x2f17de0]concealing 180 DC, 180 AC, 180 MV errors
[mpegts @ 0x2efed40]MAX_READ_SIZE:5000000 reached
[lavf] Video stream found, -vid 0
[lavf] Audio stream found, -aid 2
[lavf] Audio stream found, -aid 3
[lavf] Audio stream found, -aid 4
[lavf] Audio stream found, -aid 5
[lavf] Audio stream found, -aid 6
[lavf] Audio stream found, -aid 7
[lavf] Video stream found, -vid 8
[lavf] Video stream found, -vid 9
[lavf] Audio stream found, -aid 10
[lavf] Audio stream found, -aid 11
[lavf] Audio stream found, -aid 12
[lavf] Video stream found, -vid 13
[lavf] Video stream found, -vid 14
LAVF: Program 514 
LAVF: Program 513 
LAVF: Program 2049 
LAVF: Program 770 
LAVF: Program 769 
VIDEO:  [MPG2]  720x576  0bpp  25.000 fps  15000.0 kbps (1831.1 kbyte/s)
==========================================================================
Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
Try appending the scale filter to your filter list,
e.g. -vf spp,scale instead of -vf spp.
VDecoder init failed :(
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Unsupported PixelFormat -1
Selected video codec: [ffmpeg2] vfm: ffmpeg (FFmpeg MPEG-2)
==========================================================================
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 48000 Hz, 2 ch, s16le, 192.0 kbit/12.50% (ratio: 24000->192000)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
VO: [vdpau] 720x576 => 768x576 Planar YV12 
No bind found for key 'c'.                          0%  2%  0.1% 0 0 
A:10399.3 V:10405.6 A-V: -6.372 ct: -0.060   0/  0  0%  2%  0.1% 0 0 
Exiting... (Quit)