[MPlayer-users] Problems playing DVB-T HD streams

[Etienne Sandré-Chardonnal]

Hi all,

I have trouble to play some DVB-T channels with mplayers.

Description of the problem:

- I am living in Paris, France. I have an AverMedia Volar Black HD USB
tuner. My channels.conf is set up properly : everything plays fine with vlc.
Mplayer works for all SD channels, and one HD channel (ARTE). The three
other channels (TF1, M6, F2) are very bad : slow playback, lots of bad
blocks, freezes. The main differences with the working HD channel ARTE are :
separate multiplex, VBR instead of CBR, DD+ (E-AC3) sound instead of MP2
sound.

- I am under debian unstable on AMD64, kernel 2.6.29, up to date. The
mplayer package provides a mplayer version : dev-SVN-r29417. I also tried to
compile the latest mplayer source image, with same results. I have tried
various -vo : xv,x11,vdpau. I have tried vc: ffh264,ffh264vdpau. All with
same results.

- I have tried to dump the stream to a ts file. The file plays not too bad
with mplayer, but slow (about 1/2) and jerky, while the CPU is not
overloaded (25\%, ie half of a single core). The file plays smoothly with
VLC. Using -fps 50 does not accelerate or improve the playback. You may
download the ts file at : http://www.galinette.org/test.ts
(29MB<http://www.galinette.org/test.ts(29MB>
)

- You can download the mplayer output:
http://www.galinette.org/tf1.txt (verbose)
http://www.galinette.org/tf1b.txt (standard)


- My channel.conf lines are like this one:
TF1
HD:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:110+120:110+130:1281


Any help appreciated!

Thanks,

Etienne