[mythtv] mpeg4 H.264 over dvb in UK

%Sriskanthan Nadarajah ESRIS at ntu.edu.sg
Mon May 29 23:55:29 UTC 2006

Please let me know your system specifications.
WINUX Interfacing Technology Pte. Ltd.
Tele: (65) 6794-3069 H/P 92763116
Com. Reg. No: 200303307W
Unit207, Innovation Centre, 16 Nanyang Drive
Singapore 637722  


From: mythtv-dev-bounces at mythtv.org on behalf of Mark Kendall
Sent: Tue 5/30/2006 6:16 AM
To: Development of mythtv
Subject: Re: [mythtv] mpeg4 H.264 over dvb in UK

On 5/28/06, Simon Kenyon <simon at koala.ie> wrote: 

	On Saturday 27 May 2006 19:43, Mark Kendall wrote:
	> I used the latest cvs versions of both ffmpeg and mplayer with the
	> following patch applied to ffmpeg:-
	> http://students.washington.edu/lorenm/src/x264/ffh264_mbaff.0.diff
	> Quality appears to be pretty good but I'd guess I'm only getting 12-15 fps
	> (Ahtlon XP3000+, 1 Gig RAM, FX6200). Trying to get vlc up and running now 
	> but applying the patch directly to the mythtv source doesn't work as yet.
	there is a hhf264_mbaff.1.diff there now

Thanks largely to Isaac's ffmpeg update, I've now got some BB HD streams working in mythtv. I did however have to apply the hack below. No joy with live tv tonight though - segmentation faults every time:)

Performance wise, I have one recording that averages about 16 fps. Athlon xp 3000+ overclocked to 2.4ghz, 1 Gb RAM, FX6200.



Index: mythtv/libs/libmythtv/mpeg/h264utils.cpp
=================================--- mythtv/libs/libmythtv/mpeg/h264utils.cpp (revision 10060)
+++ mythtv/libs/libmythtv/mpeg/h264utils.cpp (working copy) 
@@ -114,7 +114,8 @@

     // stage 2: determine if it's an IDR AU
-    if (!saw_first_VCL_NAL_unit && new_NAL_type = NALUnitType::SLICE_IDR)
+    //if (!saw_first_VCL_NAL_unit && new_NAL_type = NALUnitType::SLICE_IDR) 
+    if (!saw_first_VCL_NAL_unit)
         keyframe      }

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