Opened 11 years ago
Closed 11 years ago
Last modified 11 years ago
#11118 closed Bug Report - General (fixed)
Lossless transcode fail with "avcodec_encode_video failed"
Reported by: | stuartm | Owned by: | beirdo |
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Priority: | blocker | Milestone: | 0.26 |
Component: | MythTV - Mythtranscode | Version: | Master Head |
Severity: | medium | Keywords: | |
Cc: | Ticket locked: | no |
Description
Seems to apply to every recording I've tried, including a few which are 4-5 years old. The presence/use of cutlists doesn't seem to make a difference.
mythtranscode --honorcutlist -i /mnt/myth2/17070_20111203040800.mpg 2012-09-23 22:06:21.827818 C mythtranscode version: master [v0.26-rc2-37-g154d72b-dirty] www.mythtv.org 2012-09-23 22:06:21.827857 C Qt version: compile: 4.8.2, runtime: 4.8.2 2012-09-23 22:06:21.827863 N Enabled verbose msgs: general 2012-09-23 22:06:21.827884 N Setting Log Level to LOG_INFO 2012-09-23 22:06:21.828566 I Added logging to the console 2012-09-23 22:06:21.829284 I Setup Interrupt handler 2012-09-23 22:06:21.829299 I Setup Terminated handler 2012-09-23 22:06:21.829310 I Setup Segmentation fault handler 2012-09-23 22:06:21.829319 I Setup Aborted handler 2012-09-23 22:06:21.829329 I Setup Bus error handler 2012-09-23 22:06:21.829338 I Setup Floating point exception handler 2012-09-23 22:06:21.829347 I Setup Illegal instruction handler 2012-09-23 22:06:21.829362 I Setup Real-time signal 0 handler 2012-09-23 22:06:21.829435 N Using runtime prefix = /usr/local 2012-09-23 22:06:21.829457 N Using configuration directory = /home/gbee/.mythtv 2012-09-23 22:06:21.829569 I Assumed character encoding: en_GB.UTF-8 2012-09-23 22:06:21.830901 N Empty LocalHostName. 2012-09-23 22:06:21.830915 I Using localhost value of scafell 2012-09-23 22:06:21.863822 N Setting QT default locale to en_GB 2012-09-23 22:06:21.863848 I Current locale en_GB 2012-09-23 22:06:21.863925 N Reading locale defaults from /usr/local/share/mythtv//locales/en_gb.xml 2012-09-23 22:06:21.882031 I Loading en_gb translation for module mythfrontend 2012-09-23 22:06:21.887247 N Transcoding from /mnt/myth2/17070_20111203040800.mpg to /mnt/myth2/17070_20111203040800.mpg.tmp 2012-09-23 22:06:21.962794 I MythCoreContext: Connecting to backend server: 192.168.159.2:6543 (try 1 of 1) 2012-09-23 22:06:21.965219 I Using protocol version 75 2012-09-23 22:06:21.987947 I AFD: Opened codec 0x2418d80, id(MPEG2VIDEO) type(Video) 2012-09-23 22:06:21.987962 I AFD: codec MP2 has 2 channels 2012-09-23 22:06:21.988078 I AFD: Opened codec 0x2461a20, id(MP2) type(Audio) 2012-09-23 22:06:21.988116 I AFD: codec MP2 has 2 channels 2012-09-23 22:06:21.988182 I AFD: Opened codec 0x2462300, id(MP2) type(Audio) 2012-09-23 22:06:21.988255 I AFD: Opened codec 0x24635c0, id(DVB_SUBTITLE) type(Subtitle) 2012-09-23 22:06:21.988435 N AudioPlayer: Enabling Audio 2012-09-23 22:06:22.027222 I Honoring the cutlist while transcoding 2012-09-23 22:06:22.030567 I Cutlist : 0-4117,6865-74877 2012-09-23 22:06:22.030599 I Original Length: 74877 frames 2012-09-23 22:06:22.030605 I New Length : 2748 frames 2012-09-23 22:06:22.032071 N Transcode: Looking for autodetect profile: Autodetect from 576i 2012-09-23 22:06:22.058809 E SampleRate: Attempted to add a rate 32000 Hz, which is not in the list of allowed rates. 2012-09-23 22:06:22.060167 I Added logging to mythlogserver at TCP:35327 2012-09-23 22:06:22.064195 N Transcode: Using autodetect profile: MPEG2 2012-09-23 22:06:22.064279 N Switching to MPEG-2 transcoder. 2012-09-23 22:06:22.068004 I Starting process manager 2012-09-23 22:06:22.068968 I Starting process signal handler 2012-09-23 22:06:22.069371 I Starting IO manager (read) 2012-09-23 22:06:22.074463 I Starting IO manager (write) 2012-09-23 22:06:22.176458 I Opening /mnt/myth2/17070_20111203040800.mpg 2012-09-23 22:06:22.183562 I Invalid extradata, subtitle streams may be combined! 2012-09-23 22:06:22.184237 I Header missing 2012-09-23 22:06:22.185107 I Header missing 2012-09-23 22:06:22.208299 I PES packet size mismatch 2012-09-23 22:06:22.208322 I PES packet size mismatch 2012-09-23 22:06:22.208338 I PES packet size mismatch 2012-09-23 22:06:22.208388 I Input #0, mpegts, from '/mnt/myth2/17070_20111203040800.mpg': 2012-09-23 22:06:22.208411 I Duration: 00:49:56.15, start: 14378.927611, bitrate: 7004 kb/s 2012-09-23 22:06:22.208480 I Stream #0:0[0xd04]: Video: mpeg2video (Main), yuv420p, 704x576 [SAR 16:11 DAR 16:9], 10000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc 2012-09-23 22:06:22.208499 I Stream #0:1[0xd05](eng): Audio: mp2, 48000 Hz, stereo, s16, 192 kb/s 2012-09-23 22:06:22.208514 I Stream #0:2[0xd06](NAR): Audio: mp2, 48000 Hz, stereo, s16, 128 kb/s 2012-09-23 22:06:22.208528 I Stream #0:3[0x938](eng): Subtitle: dvb_teletext 2012-09-23 22:06:22.208540 I Stream #0:4[0x939](eng): Subtitle: dvb_subtitle 2012-09-23 22:06:22.208616 E Skipping unsupported codec 3 on stream 3 2012-09-23 22:06:22.208624 E Skipping unsupported codec 3 on stream 4 2012-09-23 22:06:22.213730 I #0 PTS:03:59:39.513 Delta: 0.0ms queue: 11 2012-09-23 22:06:22.213771 I #1 PTS:03:59:39.509 Delta: 4.14444ms queue: 2 2012-09-23 22:06:22.213790 I #2 PTS:03:59:39.504 Delta: 9.18889ms queue: 7 2012-09-23 22:06:23.585671 I Del map found 0 at 4117 (4117) 2012-09-23 22:06:23.648221 E avcodec_encode_video failed (0) 2012-09-23 22:06:23.648793 E Transcoding /mnt/myth2/17070_20111203040800.mpg failed 2012-09-23 22:06:23.648866 I Waiting for threads to exit.
Attachments (2)
Change History (9)
comment:1 Changed 11 years ago by
Changed 11 years ago by
Attachment: | 0001-Fix-video-encode-in-MPEG2-lossless-transcoding.patch added |
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comment:4 Changed 11 years ago by
Resolution: | → fixed |
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Status: | new → closed |
comment:5 Changed 11 years ago by
I just tried this and my transcode failed with "CoreContext? mpeg2fix.cpp:698 (AddFrame?) - Deadlock detected. One buffer is full when the other is empty! Aborting" but I'm not totally sure if this is due to the fix or a new issue. I'll leave it to you to decide between reopening the ticket or asking me to create a new one.
I'll also attach the full transcode log.
Changed 11 years ago by
Attachment: | mythtranscode.20120924142637.21697.log added |
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CoreContext? mpeg2fix.cpp:698 (AddFrame?) - Deadlock detected. One buffer is full when the other is empty! Aborting
comment:6 Changed 11 years ago by
That's not a regression caused by this fix, it's not even a new issue but a very, very old one that no-one has ever figured out. There are lots of tickets for it, possibly one is still open but given that the bug has existed since the lossless mpeg2 transcode has existed I wouldn't bank on a quick fix.
comment:7 Changed 11 years ago by
I'm not so sure of that. I am now seeing the "one buffer full" error on all losless transcodes, having never seen it before in many years of using Myth. Something has introduced it.
I think the attached patch should fix it. If you could try that out on your test cases...