[vdr] VDR test series about frame detector

Jochen Heuer jogi-vdr at planetzork.ping.de
Thu Jan 16 17:32:33 CET 2014


Hallo,

anbei mal die Infos über mein Archiv (~1.6 TB - 100MB Maxsize):

5  : 9455
6  : 6132
7  : 57
8  : 52
9  : 36
10 : 23
11 : 16
12 : 20
13 : 6
14 : 8
15 : 8
16 : 6
17 : 4
19 : 1
83 : 1

ich denke, mit 6 hätte man bereits den Großteil erschlagen (>98.5%) und mit 10
ist man sogar bei >99.5%.

Und wer weiß, ob die mit 83 nicht sogar einfach nur defekt ist ...

Gruß,

   Jogi


On Tue, Jan 14, 2014 at 09:34:07PM +0100, Eike wrote:
> Hello!
> 
> I need some help from VDR users - for variety reasons especially from those not in Germany.
> There's a glitch in the frame detection of VDR. It sometimes misses the first possibility to record a stream. 
> It looks on frames of at least 5 * 188 bytes, and depending on the stream, sometimes 6 frames are needed. 
> Trouble is, I'm not sure if 6 is enough for everybody. Thus I need your tests.
> 
> You need ot be able to compile a VDR to help. First, in the VDR directory, you do a:
> > make
> 
> Then you compile the attached C++ file (unziped, of course):
> > g++ -c framedetectortest.cpp
> 
> Then you're linking it:
> g++ -o framedetectortest framedetectortest.o remux.o ringbuffer.o thread.o tools.o i18n.o sections.o channels.o device.o audio.o ci.o receiver.o transfer.o player.o osdbase.o 
> status.o skins.o osd.o config.o font.o sources.o menu.o recording.o videodir.o timers.o epg.o dvbplayer.o menuitems.o remote.o keys.o interface.o plugin.o cutter.o themes.o 
> svdrp.o eit.o eitscan.o shutdown.o filter.o sourceparams.o dvbsubtitle.o pat.o sdt.o nit.o dvbdevice.o diseqc.o recorder.o dvbci.o libsi/libsi.a -lfontconfig -lfreetype -lpthread -ldl -
> ljpeg
> 
> Now you've got an application called framedetectortest, which you can feed your vdr recordings (*.ts files) to:
> > ./framedetectortest 00002.ts
> 
> The output looks about like this:
> 
> Checking file at offset 0
> Without frame limit... Found I frame after 99452 bytes
> With frame limit 5... Found I frame after 220336 bytes
> With frame limit 6... Found I frame after 99452 bytes
> TS package frame size needed for this video block: 6
> Maximum TS package frame size needed for this video recording: 6
> 
> I need reports which number your stream resulted in (the "Maximum TS package frame size") and what you've tested 
> (Cable? Satellite? Terrestrical? HD, SD? Your country?). The result is interesting even if it is 5 or 6.
> 
> Thanks in advance,
> Eike





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