eagle_eyes Posted August 10, 2004 Share Posted August 10, 2004 There is a new test channel feed on Astra 1 on 11435 MHz When looking at the channel - no name SID 6290 it appears blank for a while. then has video but DVBViewer does not detect the size and refresh rate and simply has 0x0 25fps at the bottom of the window. Any ideas? Quote Link to comment
Griga Posted August 10, 2004 Share Posted August 10, 2004 Hmm, I only find one channel on this transponder (see below, thanks for the info). It's a test card, and the DVBViewer diplays 720x576, 25 fps. Quote Link to comment
eagle_eyes Posted August 10, 2004 Author Share Posted August 10, 2004 Odd, this is what I'm seeing at this very moment... Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 Bei dir fehlt der audio_pid. Ohne den will der DVBViewer glaub ich nicht (obwohl es solche fälle auch gibt). Vielleicht testen die und bei @griga war er in der pmt, bei dir aber nicht. Nochmal scannen.. ..hm, sehe gerade, dass du anscheinend einen anderen service als @griga meinst. Quote Link to comment
Griga Posted August 10, 2004 Share Posted August 10, 2004 @Derrick: English! I've entered the data manually in my channel list, tried to tune it with DVBViewer Filter - nothing. Then with Marfi's Filter - total freeze. Had to reset the PC and additionally the SS2 in the device manager in order to make it work again. @eagle_eyes: Are we both speaking of Astra 19° East? Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 *gg* @eagle_eyes, nomen est omen ..du hast eine super entdeckung gemacht, ohne zu wissen, was es ist Der video stream deines senders ist der erste 720p stream, den ich live (naja, nicht ganz) gesehen habe Da wird @Griga etwas zu knabbern haben, um den im DVBViewer sichtbar zu machen. Ich habe einen kleinen trick gebraucht, weil erst alles abstürzte Als user data steht " MPEG.2.Test.Sequence..50.frames." im stream. Sensationell Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 (edited) ok, @eagle_eyes, you´ve discovered the 1st 720p transmission Edited August 10, 2004 by Derrick Quote Link to comment
Klausing Posted August 10, 2004 Share Posted August 10, 2004 Derrick : could you please explain a little bit more what 720p is? Is it a HDTV form ? Quote Link to comment
Klausing Posted August 10, 2004 Share Posted August 10, 2004 sorry now i see it. you made a new screenshot ........... Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 (edited) yep, 1280x720, 50 frame per second progressive I´ve always said that this format would be much better for e.g. sport events than 1080i. Edited August 10, 2004 by Derrick Quote Link to comment
Griga Posted August 10, 2004 Share Posted August 10, 2004 Now I've got it. Had Video Only Channels disabled in TransEdit, that's why I coudn't see it. @Everybody: Don't try to receive it with Marfi's Filter - very hard crash! I can record it as TS and then play it back as a file - not with the TSPlayer, but in the DVBViewer (after having stopped the recording). The filter graph requires the Elecard Demuxer. @DerricK: Any other trick? @eagle_eyes: How do you watch it live? Quote Link to comment
Griga Posted August 10, 2004 Share Posted August 10, 2004 (edited) News: I can watch it live by using the DVBViewer Filter and then Sonic Cinemaster video decoder (hardware-accelerated) or the Elecard video decoder (not accelerated, stuttering). Something prevents the DVBViewer from recognizing the video parameters - that's why they aren't displayed correctly. I will analyze it later... Edited August 10, 2004 by Griga Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 @Griga, you already knew what you were looking for After the DVBViewer and transedit's preview was crashing, I've tuned to the harmless channel, recorded the TS stream and investigated (tsreader etc.) the stream. Seemed to be a high bitrate mpeg stream. After fiddling for a while with the stream without success I remuxed the ts with pj.x to a new ts with the a_pid from the other channel The resulting ts was perfectly playable with elecard. Now I'm a little bit further and watching live with Altdvb. The missing a_pid I've borrowed again from the other channel though from time to time I have to click and restart the loop at the beginning. Quote Link to comment
Guest Lars_MQ Posted August 10, 2004 Share Posted August 10, 2004 Wow, nice sharp and clear picture, but I think I need a better cpu, the Athlon 2000+ works with 80 % only for video (DVBViewer Filter and Elecard) Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 (edited) ..works perfectly alright with altdvb (exept the restart) and intervideo (25% cpu). DVBViewer can't be fooled but there's another strange thing. I've imported the channel from transedit and with the DVBViewer the transponder only yields a very low signal (<= 30%) but 100% in altdvb (100% cos of screenshot with elecard) Edited August 10, 2004 by Derrick Quote Link to comment
Griga Posted August 10, 2004 Share Posted August 10, 2004 (edited) I guess there's no sequence header following after the PES header. That's why - TSPlayer doesn't find a video stream - VRPlugin doesn't record it as MPG (but as TS) - DVBViewer doesn't display the video params - picture stays blank for some time before playback starts All decoders are searching for it... me too. I'll examine the TS with a hex editor... Edited August 10, 2004 by Griga Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 There's nothing wrong with the stream. The sequence headers are just fine. Just record the ts (without a fake a_pid) and play it back with the elecard player. It takes 100% of cpu load with my p4, 2,66. If I render the file with graphedit I'll get the sonic filter but still about 90% (acc. apparently not working properly). Maybe there's a bug concerning 50 frames/s in the DVBViewer? Quote Link to comment
Griga Posted August 10, 2004 Share Posted August 10, 2004 Well, as I expected: - First recording: Within 10 MB pure video no sequence header (00 00 01 B3) - Second recording: Within 50 MB pure video only one sequence header somewhere 'in between', not right after a PES header Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 ..here's a screenshot from another tool. The TS was recorded with the recorder plugin as I told before. Please make the dvbviewer_demo working, playing just video Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 Well, as I expected: - First recording: Within 10 MB pure video no sequence header (00 00 01 B3) - Second recording: Within 50 MB pure video only one sequence header somewhere 'in between', not right after a PES header ..but that seems to be no fatal mistake. No complaints from my tools.. ..is it possible to change the routine and look for the sequence headers if the elementary stream is marked as video? Quote Link to comment
Griga Posted August 10, 2004 Share Posted August 10, 2004 And here's the hex dump. Blue = TS packet header, red = PES header, orange = sequence header start. Any idea how this can be found without a lot of unnecessary searching? 47 40 42 1D 00 00 01 E0 00 00 80 C0 0A 31 01 1F 45 5F 11 01 1F 37 4F C4 D2 57 02 65 02 4F FE D4 6C 34 0C 70 09 4A 00 8F 44 D0 30 03 D2 81 27 FF 74 17 59 86 81 80 1E 94 09 3F FB A0 D0 30 03 D0 C0 49 FF DD 5F 2E 9E 0D 25 0B 0C 04 9F FD 8B 01 B0 0F 50 01 1D 66 59 2B 8F 28 2F 41 A0 63 81 34 02 4F FE EA 12 18 CB 3D 43 9C 7D 40 21 00 3A 49 A4 D0 13 18 08 9F F0 19 00 9C 00 EB 82 2F FE 00 C0 12 7F E8 32 5F E4 00 3B 0B 27 37 80 00 00 01 B7 00 00 01 B3 50 02 D0 36 29 81 32 A9 10 11 11 Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 not really but the decoders seem to be unimpressed by this fact and if it's just the missing display of this info i could live with it I've just made another test with altdvb and the intervideo filter. The fake a_pid is not nessecary. After starting the channel it was 1st displayed as 4/3 and after a couple of seconds it switched to 16/9 ..it's always at the start of a sequence with these exploding frames. There's one thing left. At the start of the loop there must a discontinuity, but I have to find the right frame. Quote Link to comment
Griga Posted August 10, 2004 Share Posted August 10, 2004 but the decoders seem to be unimpressed by this fact They are searching too, at least for some seconds... What I can do: Add an option to the TSPlayer, letting it accept the video stream as it comes, without searching for a sequence header, and working with default video params. But I wouldn't let the DVBViewer perform lengthy searching in the live stream... just for one channel. Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 (edited) They are searching too, at least for some seconds... Imho I'll get a picture within the normal time.. I've found the gop. The picture shows the I frame at the beginning of the loop. The last P frame in front of the I frame is a blue picture of a closed gop. Edited August 10, 2004 by Derrick Quote Link to comment
Derrick Posted August 10, 2004 Share Posted August 10, 2004 You were right.. after a restart of the program nothing happens and then suddenly the picture popps up (and stops with the blue screen ) ..I call it a day Quote Link to comment
eagle_eyes Posted August 11, 2004 Author Share Posted August 11, 2004 Wow, @Griga and @Derrick, you had an eventful night!! I'm decoding live, using DVBViewer filter, Cyberlink decoder on a 3.2GHz P4 with NVidia Geforce FX 5950 graphics card. My TSReader can see it, not sure why yours couldn't. Will the DVBViewer filter be updated to correctly identify this format MPEG? Quote Link to comment
Griga Posted August 11, 2004 Share Posted August 11, 2004 (edited) Will the DVBViewer filter be updated to correctly identify this format MPEG? No, I don't think so - unless we get some more channels behaving like this one. Actually it's not the DVBViewer Filter, but the routine responsible for video format detection. It had to perform a lot of searching, which would be useless in most other cases, in order to find the video sequence header of this channel. Edited August 11, 2004 by Griga Quote Link to comment
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