<html dir="ltr"><head></head><body style="text-align:left; direction:ltr;"><div>On Fri, 2020-06-19 at 23:51 -0700, DaveD wrote:</div><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><pre>Some recordings won't play. Sometimes I get "Decoder Error" message, </pre><pre>some times the frontend crashes. In both cases the frontend outputs a </pre><pre>raft of error messages.</pre><pre><br></pre><pre>First, it outputs about 50 lines of this:</pre><pre><br></pre><pre>Decoder decoders/avformatdecoder.cpp:3483:ProcessVideoPacket AFD: video </pre><pre>avcodec_send_packet error: Invalid data found when processing input </pre><pre>(-1094995529) gotpicture:0</pre><pre><br></pre><pre>Then maybe 70 or 80 lines (I haven't counted them) of this:</pre><pre><br></pre><pre>CoreContext mythplayer.cpp:3123:PauseDecoder Player(0): Waited 100ms </pre><pre>for decoder to pause</pre><pre><br></pre><pre>For the decoder error, I tried switching from VAAPI to OpenGL and it </pre><pre>crashed the frontend. I have tried all the playback profile options and </pre><pre>no luck. I think no matter what I pick, it ends up using VAAPI (I know </pre><pre>VDPAU is a wrapper for VAAPI). I also tried disabling the built-in </pre><pre>ffmpeg, which also caused a crash. When I get such a recording, I watch </pre><pre>it with mplayer with no problem (VLC and xine also work).</pre><pre><br></pre><pre>Another issue I have had is mythcommflag getting hung and having to be </pre><pre>killed. When it doesn't get hung, it only finds about half of the </pre><pre>commercials.</pre><pre><br></pre><pre>I have been recording most of our shows via firewire connections on two </pre><pre>Comcast cable set top boxes on a master BE/FE and a slave BE. Lately, </pre><pre>however, I have made great strides in improving my antenna system and </pre><pre>have been recording more OTA shows. I have yet to experience any </pre><pre>problems with OTA recordings; no decoder errors, no crashes, no hung </pre><pre>comm flag, and the commercials are detected almost 100% accurately. The </pre><pre>video is MUCH better (file sizes are also MUCH larger).</pre><pre><br></pre><pre>I have come to the conclusion that Comcast's compression is causing </pre><pre>problems with the recordings. I am concerned that not many users (if </pre><pre>any) are using the firewire STB tuners and that these problems will </pre><pre>never get fixed since the devs (and very few users) ever see them. I am </pre><pre>going to try setting up an external player, but I'd rather see </pre><pre>Mythfrontend get fixed. I'm just not sure how to proceed.</pre><pre><br></pre><pre>Comments and advice welcome.</pre><pre><br></pre><pre>Dave D.</pre><pre><br></pre><pre><br></pre><pre>_______________________________________________</pre><pre>mythtv-users mailing list</pre><a href="mailto:mythtv-users@mythtv.org"><pre>mythtv-users@mythtv.org</pre></a><pre><br></pre><a href="http://email.mg.glenb.net/c/eJxNjs0KwjAQhJ-muRma36aHHLz4HrtJtg0kVZoo-PZWERTmMt_MwEQfCKLRLPsQichhtFa5NAtwo3IwoXJxiggAVmqSOkkeoKYy6HEpaUO-pc5WL7UQypkRFQCRkSJoq6PBGdPsaEJW_Nr7bVDnQV4Oldx64_XZ1_7g1305UIVcKmzfMG90fcNP43RvaW9s9__2ePDbvwBMm0Fz"><pre>http://lists.mythtv.org/mailman/listinfo/mythtv-users</pre></a><pre><br></pre><a href="http://email.mg.glenb.net/c/eJxFjcsOgjAQRb-G7mxKXwyLLty40m8wUzqFRkCFQePfS-LC5K5OzslNocuYnBUldCnnDDF5b4DaGkEZwCYaSE2KiOi1zdqSlh1ONFZW9SPNUc7EYgipbr0zNejWdeCMVoCx0RZVW1tnvRdjGJgflTlW-rTvXW5FTh8e-CXvS7-TC5axzP31XFa-EpfnRswklvCzDttKy7q__qMv7eI8GA"><pre>http://wiki.mythtv.org/Mailing_List_etiquette</pre></a><pre><br></pre><pre>MythTV Forums: </pre><a href="http://email.mg.glenb.net/c/eJxFjMsKwyAQAL8m3ipxtbo5eMil_7E-NhZMUowp9O8b6KEwl2Fgko9M6W7E08fEzBiStRrzpAhHjeSCxuRSICILhsFkkJHWXAczLjVvQW65i-LdpIlNVAAmoMMJHLMbrSaKhEqxqL70_joGPQ_wuOC9natcP730t9zbIpr_ye08cjuu_b99AUe2NI8"><pre>https://forum.mythtv.org</pre></a></blockquote><pre><br></pre><pre>i use firewire with spectrum cable box and lately i have similar issue but not to the extent you are seeing.</pre><pre>on files that don't play i noticed that the file contains 4 streams (using ffprobe). the first two audio and video,</pre><pre>are tiny. if i use ffmpeg with -map option and map the last two streams to a new file and just copy the codecs, </pre><pre>the resulting file works fine. something like: ffmpeg -i (mythfilename).ts -c copy -map 0:2 -map 0:3 temp.ts then rm (mythfilename).ts then </pre><pre>mv temp.ts (mythfilename).ts</pre><pre><br></pre><pre>this does not happen often and it seems to be happening on only a couple of channels, in my case starz and tmc.</pre><pre><br></pre><pre>on many of my firewire recordings with no problem on mythfrontend, in myth leanfront on android they cannot be advanced</pre><pre>forward or back or play from bookmark. on those peter bennett suggested to use mkvmerge to correct the issue. on the files</pre><pre>giving you a decode error maybe check with ffprobe to see what the streams look like and see if you have the same issue.</pre><img width="1px" height="1px" alt="" src="http://email.mg.glenb.net/o/eJwly8EOwiAMANCvkZuEUezKgY9padlMtpkwZuLfa-LxHZ6W2lgfyT1L1dYaiSICWZ6YAhDPAqSzCjNjTC0mi77ybtsthWWzQ_xhw60FpqiSIAaNOUOqiMhilTFUZUJxveyfsY73_Tqtn7_9p3_15QtovCmN"></body></html>