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How do I debug why avconv is stalling ?
9 juillet 2015, par Ecommerce ConsultantI’m converting .mov files to .mpg files using avconv. The command being run by my php application is as follows :
avconv -y -i ’$finalvideo’ -target ntsc-dvd -aspect 4:3 ’$mpgvideo’ > $logs
I’m able to convert small .mov files to .mpg without any problems. However, I’m unable to convert videos that are over ten or fifteen minutes long. The log file is completely empty. When I run the command directly the frame stops somewhere around 34000 no matter which video I pick.
The cpu shows 97% usage on this process, however, nothing is happening.
OS Ubuntu 10
How can I gather more information about this stalled process ?
Here’s the frozen output
avconv version 0.7, Copyright (c) 2000-2011 the Libav developers
built on Nov 3 2011 13:39:09 with gcc 4.3.3
Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 23.98 (24000/1001)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/sites/default/files/compiled_videos/573-stream.mov':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
creation_time : 1970-01-01 00:00:00
encoder : Lavf53.0.3
Duration: 00:18:53.49, start: 0.000000, bitrate: 1430 kb/s
Stream #0.0(eng): Video: h264 (Main), yuv420p, 854x480, 1387 kb/s, 25.60 fps, 23.98 tbr, 90k tbn, 180k tbc
Metadata:
creation_time : 1970-01-01 00:00:00
Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 126 kb/s
Metadata:
creation_time : 1970-01-01 00:00:00
[buffer @ 0x9d88820] w:854 h:480 pixfmt:yuv420p
[scale @ 0x9d88b60] w:854 h:480 fmt:yuv420p -> w:720 h:480 fmt:yuv420p flags:0x4
Incompatible sample format 's16' for codec 'ac3', auto-selecting format 'flt'
Output #0, dvd, to '/var/www/sites/default/files/compiled_videos/573.mpg':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
creation_time : 1970-01-01 00:00:00
encoder : Lavf53.10.0
Stream #0.0(eng): Video: mpeg2video, yuv420p, 720x480 [PAR 8:9 DAR 4:3], q=2-31, 6000 kb/s, 90k tbn, 29.97 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
Stream #0.1(eng): Audio: ac3, 48000 Hz, stereo, flt, 448 kb/s
Metadata:
creation_time : 1970-01-01 00:00:00
Stream mapping:
Stream #0.0 -> #0.0 (h264 -> mpeg2video)
Stream #0.1 -> #0.1 (aac -> ac3)
Press ctrl-c to stop encoding
[mpeg2video @ 0x9d8bf20] rc buffer underflow
Input stream #0.1 frame changed from rate:48000 fmt:s16 ch:2 to rate:48000 fmt:flt ch:2
frame=33910 fps= 91 q=2.0 size= 151922kB time=336.58 bitrate=3697.7kbits/s dup=5475 drop=530Oh interesting. I used -loglevel debug -debug. I was seeing this information
stream #0:
keyframe=0
duration=0.000
dts=1133.449 pts=1133.533
size=103
*** 1 dup!
stream #0:
keyframe=0
duration=0.000
dts=1133.449 pts=1133.449
size=104Until I finally received this message
*** drop!
I have posted my bug with libav
http://bugzilla.libav.org/show_bug.cgi?id=67thanks for your help.
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Anomalie #2348 (Nouveau) : plus de flux rss dans l’espace public
23 septembre 2011, par gerard henrydepuis la version 2.1, certains flux sont récupérés avec comme date 1 jan 1970. Par exemple : http://arxiv.org/rss/math A cause de cette date, les flux n’apparaissent plus dans l’espace public. Si on regarde le source du XML, une difference est que la date est affcihee par ArXiv comme : Fri, 23 Sep (...)
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Revision 32594 : plugins en minuscules, et alias pour les noms de sites
1er novembre 2009, par fil@… — Logplugins en minuscules, et alias pour les noms de sites