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| [08:12:05] | jya: | Beirdo: ping |
| [08:13:50] | Beirdo: | heya |
| [08:14:04] | Beirdo: | I was just about to head to bed, but saw your email. |
| [08:14:38] | Beirdo: | if you have your ffmpeg backport stuff well contained, I don't see any reason why you can't go forward that way |
| [08:15:12] | Beirdo: | that way whenever someone does the resync (be it me, you, or whoever), it will be simple to make sure we do it cleanly, etc |
| [08:16:49] | Beirdo: | as for timing, if we use the sync I have, we need someone who knows the mpegts stuff to give it a good once-over first |
| [08:17:16] | Beirdo: | I am using it here in production, but may not be stressing all the different parts :) |
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| [08:38:48] | jya: | sorry, I didn't see you were here |
| [08:39:13] | jya: | A quick question recording the NuppelVideoEncoder |
| [08:39:23] | jya: | Beirdo: still up? |
| [08:40:06] | jya: | The NVP recorder, can only manage three type of audio currently with the constant defined: LAME (mp3), RAWA and AC3 |
| [08:40:38] | jya: | I was looking at adding in the recording profile the ability to store the original audio stream. |
| [08:40:57] | jya: | currently only LAME and RAWA are supported. |
| [08:43:04] | jya: | I can add my own 4 letters ID to allow decoding ; but I was wondering if that would break any NVP *standard* |
| [08:43:32] | Beirdo: | I don't know that there is any standard per se |
| [08:43:46] | jya: | it's stored as a 4 letters in the NVP |
| [08:43:51] | jya: | most video codecs are defined |
| [08:44:03] | jya: | but for audio, it's rather scarce :P |
| [08:44:05] | Beirdo: | yeah, likely a 4CC, but I don't know for playback. |
| [08:44:39] | Beirdo: | I don't think nuppel really had any standards |
| [08:44:39] | jya: | I see there's a "transcodeless" setting, which is supposed to leave audio and video as-is |
| [08:44:49] | jya: | that is true for video, but for audio it converts it to MP3 |
| [08:44:56] | jya: | which only works for 16 bits audio |
| [08:45:10] | Beirdo: | Isaac and Daniel may know better on the "standards" part there |
| [08:45:22] | Beirdo: | yeah, certainly limiting as is |
| [08:45:25] | jya: | it's really messy that code, full of constants everwhere, defined as string |
| [08:45:34] | Beirdo: | hehe, so true |
| [08:45:44] | jya: | it's all over the place |
| [08:45:54] | Beirdo: | I have the threads for NVR redone |
| [08:46:15] | Beirdo: | but I haven't pushed it yet as I don't know if I can easily test it |
| [08:46:44] | Beirdo: | was going to tweak it a bit with a PVR250 tomorrow |
| [08:46:56] | jya: | so is it okay if I had basic detection for the most common audio codec (ac3, dts, aac, mp3, and if not just convert as mp3? |
| [08:47:43] | jya: | currently it does something like: if (codec == "MP3" then ... elsie if codec == "Uncompressed" else : unknown codec |
| [08:47:46] | Beirdo: | I would think so, but be sure to pass it past Daniel if you can. He's doing much of the recording rewrite stuff |
| [08:48:29] | jya: | I'm afraid I got myself in muddy water |
| [08:48:52] | jya: | I thought adding passthrough audio would be just a matter of writing the audio stream in the container |
| [08:48:54] | jya: | not quite |
| [08:49:23] | Beirdo: | heh, figures |
| [08:49:47] | Beirdo: | anyways, I'm about to pass out, I should go to bed before I end up messing up code or something dumb |
| [08:49:48] | jya: | oh! surprise! "ONE" comment in nuppeldecoder.cpp :) |
| [08:49:58] | jya: | allright, goodnight :) |
| [08:50:31] | Beirdo: | wow, that's one more than expected |
| [08:50:38] | Beirdo: | talk to ya later, I'm sure :) |
| [08:51:02] | jya: | I'm hiding from my wife anyhow.. she would throw a fuss if she knew I was working on myth |
| [08:52:01] | Beirdo: | I no longer have that issue |
| [08:52:13] | jya: | divorced ? :) |
| [08:52:43] | Beirdo: | aye. No fun, I do not recommend it to anyonw |
| [08:53:04] | Beirdo: | but it does leave me time to work on myth :) |
| [08:53:32] | jya: | this transcode + pulse fix is going to be my last changes for a while |
| [08:53:38] | jya: | allrght, goodnight |
| [08:54:00] | Beirdo: | night |
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| [10:39:38] | okolsi: | Beirdo: maybe one of those corner cases again.. seeing new thread related error in backend log |
| [10:42:32] | okolsi: | Beirdo: Beirdo: http://mythtv.pastebin.com/peQe3L2t |
| [10:43:12] | okolsi: | Beirdo: looks like recordings and livetv does not work anymore, also MythWeb Backend Status page does not load anymore |
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| [14:06:37] | markk_: | iamlindoro: that thread needs to die and soon – nothing good will come of it |
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| [14:31:13] | iamlindoro: | markk_, http://www.phoronix.com/scan.php?page=news_item&px=OTEzNg |
| [14:31:24] | iamlindoro: | (and yes, I agree, I've said my last on the topic) |
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| [15:01:29] | stuartm: | that's a poorly written article :/ |
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| [15:20:31] | stuartm: | does the mythvideo scan cause a crash for anyone else? |
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| [16:06:47] | danielk22: | jpabq: 002b9c2c (John Poet 2010-04–15 00:17:02 +0000 1216) m_h264_parser.Reset(); |
| [16:07:15] | danielk22: | jpabq: Any idea of the history of that? It appears to be what is breaking LiveTV for the hd-pvr |
| [16:09:17] | danielk22: | jpabq: It's attached to this... http://code.mythtv.org/trac/ticket/6602 reading... |
| [16:11:01] | danielk22: | gah, the [24144] link is broken :| I loathe git more every passing day. |
| [16:11:03] | MythLogBot: | SVN 24144: (branch master) https://github.com/MythTV/mythtv/commit/002b9c2c |
| [16:11:28] | danielk22: | heh, thanks mythlogbot :) |
| [16:12:09] | jpabq: | danielk22, you are saying that we don't wont to treat a new "file" as a stand-alone (autonomous) recording? |
| [16:15:53] | danielk22: | jpabq: We should, but the problem is that with that change we drop all data between the time the _wait_for_keyframe_option is set and the next keyframe. Since we don't call the reset until we have hit the start of a keyframe we dump all the frames between the two keyframes which is about 2 seconds of data. |
| [16:16:23] | jpabq: | Ah. okay, that makes sense. |
| [16:17:16] | danielk22: | The real problem is probably that the m_h264_parser doesn't tell us about the keyframe until we are several TS packets into it.. |
| [16:17:30] | jpabq: | So, it is not the Reset() that at is the problem, it is the _wait_for_keyframe_option = true |
| [16:17:38] | danielk22: | yes |
| [16:18:06] | jpabq: | ... and the "new" H264Parser code is even worse about that — to fix BBC stuff. |
| [16:18:13] | danielk22: | as far as data loss is concerned. I'm still not sure why the reset is needed... |
| [16:18:39] | jpabq: | It probably isn't, considering the situation that that code is called. |
| [16:19:10] | jpabq: | I can take it out, and do a little testing. |
| [16:19:26] | danielk22: | but there must have been something that mark b was running into? probably should have asked him for a backtrace of the frontend faults.. |
| [16:20:06] | jpabq: | I can send him an email. It is possible that he made some bad assumptions (just like I did) there. |
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| [16:26:21] | jpabq: | I sent Mark B. an email. I am going to be offline for a little bit... |
| [16:30:50] | danielk22: | Beirdo: I'm glad you are looking into the QThread conversion. Keep an eye out for memory leaks though; one of the reasons we didn't jump into it before is that QObjects leak memory if they are created from within a QThread's run() unless the QThread is running an event loop to do the cleanups. |
| [16:49:49] | danielk22: | I believe calling QCoreApplication::processEvents(QEventLoop::DeferredDeletion); periodically would work, but that is depreciated. I'm not sure if you are really supposed to use QThread + the heap (new) without an event loop. |
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| [16:57:37] | danielk22: | Beirdo: From what I can tell from google that processEvent call will not work with Qt 4.7. You now must call exec() from within every QThread::run() for the deferred deletes to be processed :| |
| [17:01:32] | danielk22: | Anyway most threads on the backend will not use deferred deletes. But anything using the more complicated Qt classes (like the http download or xml parser code) may have leaks. On the frontend I don't really know what the situation is. |
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| [17:31:17] | jpabq: | danielk22, removing that block seems to work okay. Still get a two second pause on program change, but I think that is normal for any input type, right? |
| [17:37:43] | danielk22: | jpabq: no that's not normal, it's still dropping packets.. it's only about 20 ts packets.. but it's enough to cause libav to drop over a hundred frames.. |
| [17:39:00] | jpabq: | okay. I thought I remembered the HDHomerun also having about a 2 second pause in that situation. |
| [17:39:44] | danielk22: | Dunno, the HDHomeRun may have a similar bug. There should be absolutely no pause on a livetv transition. |
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| [17:40:21] | jpabq: | I didn't actually notice any loss of audio/video on the program change, just the pause as it made the switch. |
| [17:40:54] | danielk22: | oh, that may be a frontend regression then.. something for markk to worry about ;] |
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| [17:47:25] | jpabq: | I have also sent elmojo an email asking him to try it without that block of code. He is the one that has been trying to improve LiveTV with the HD-PVR lately. |
| [17:50:37] | danielk22: | jpabq: for testing the recorder I've actually been creating 1 minute recordings and then stitching them together with cat and playing them in mythavtest (to avoid conflating recorder vs. playback bugs). |
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| [17:53:27] | jpabq: | And it looks good with that block of code removed? |
| [17:54:07] | danielk22: | just trying that now. i had tried removing only part of it and it still dropped packets. |
| [18:00:45] | jpabq: | Hmmm. Well the LiveTV program change that just happened *did* have some loss. |
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| [18:08:28] | danielk22: | hmm, same here, something else seems to be doing a reset |
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| [18:12:28] | danielk22: | DTVRecorder::ResetForNewFile() (in mythtv-rec at least) has the same problem.. |
| [18:13:28] | danielk22: | In master too.. |
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| [18:40:23] | danielk22: | jpabq: Looks like if I comment out the _first_keyframe=-1 and m_h264_parser.Reset(); in the DTVRecorder version also no packets are dropped in DTVRecorder::ProcessTSPacket() .. but It still looks like there is a discontinuity in the packets delivered that function. |
| [18:41:54] | danielk22: | i.e. there is some other problem at work as well.. the good news is that all those video frames aren't missing anymore, but it does lose about one second of audio... |
| [18:43:07] | danielk22: | + I'm not sure how this change will interact with the keyframe map generation. |
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| [19:56:04] | saibot: | Hello all. Having some trouble with my new Myth install, wondering if anyone caln help. I installed Fedora 14 and then the mythtv packages from ATrpms. Most everything is working except for my remote control. I'm using a serial IR receiever and a Hauppauge remote transmitter. if I cat /dev/lirc0 and push buttons on my remote, I see data. However irw displays nothing, and the frontend does not respond. Can someone point me in the |
| [19:56:04] | saibot: | right direction? |
| [19:56:46] | danielk22: | saibot: wrong channel, see topic. |
| [19:57:10] | saibot: | sorry, thank you. |
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| [20:16:54] | danielk22: | jpabq: I had to also comment out _seen_sps=false; in the DTV ResetForNewFile.. it was dropping packets on that too. |
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| [22:43:28] | neXyon: | hi! can someone explain to me what sasc-ng and cccam are used for exactly? |
| [22:43:55] | iamlindoro: | no |
| [22:44:17] | iamlindoro: | Because a) this is the development channel, see topic, and b) discussing illegal activities is against the rules even in the correct channel |
| [22:44:37] | stuartm: | for software decoding of encrypted broadcasts – usually against terms and conditions of the service, frequently against the law and completely unsupported by MythTV for that reason |
| [22:45:18] | stuartm: | MythTV supports legal hardware cams with a valid subscription card and nothing else |
| [22:46:08] | stuartm: | and only certain hardware, i.e. that integrated into the tuner card where decryption is done at recording time and not during playback |
| [22:46:34] | neXyon: | I want to use my hardware cam... |
| [22:46:53] | wagnerrp: | then sasc-ng and cccam are completely unnecessary |
| [22:47:08] | iamlindoro: | still wrong channel |
| [22:47:30] | neXyon: | I see, well then I have to find out how to get it to work, any hints where to look? |
| [22:47:48] | wagnerrp: | not here |
| [22:49:13] | stuartm: | neXyon: you can try #mythtv-users, but the percentage of mythtv users with experience of cams is pretty small so you may have to be patient |
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| [22:50:43] | wagnerrp: | if you are trying to get the hardware cam working, then yes, #mythtv-users... if you are trying to get those programs working, you will be told the same thing over there as you were here |
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