Comments on: How to convert matroska MKV to AVI on Linux ?

By: j2quinn

j2quinn — Fri, 25 Feb 2011 09:27:53 +0000

for those who have a syntax error; it is due to the python version. you need to explicitly state python2 in the case of archlinux. script needs modification for python3.

jesse

By: jagarsoft

jagarsoft — Wed, 26 Jan 2011 07:54:54 +0000

At last, I’ve found a set of options which don’t cause error:

os.system(“ffmpeg -i temp_audio.ogg -i temp_video.avi -f avi -vcodec mpeg4 -b 950k -g 300 -bf 2 -acodec mp2 -ab 64k -vtag divx ‘%s’.avi” % (basename) )

PS: However, it’s not a optimal set of options :-( This was just a try!

By: jagarsoft

jagarsoft — Tue, 25 Jan 2011 11:07:43 +0000

Hi. Thanks a lot for your script!!

It dumps an error:

[snip]
FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: –extra-version=4:0.5.1-1ubuntu1 –prefix=/usr –enable-avfilter –enable-avfilter-lavf –enable-vdpau –enable-bzlib –enable-libgsm –enable-libschroedinger –enable-libspeex –enable-libtheora –enable-libvorbis –enable-pthreads –enable-zlib –disable-stripping –disable-vhook –enable-runtime-cpudetect –enable-gpl –enable-postproc –enable-swscale –enable-x11grab –enable-libdc1394 –enable-shared –disable-static
libavutil 49.15. 0 / 49.15. 0
libavcodec 52.20. 1 / 52.20. 1
libavformat 52.31. 0 / 52.31. 0
libavdevice 52. 1. 0 / 52. 1. 0
libavfilter 0. 4. 0 / 0. 4. 0
libswscale 0. 7. 1 / 0. 7. 1
libpostproc 51. 2. 0 / 51. 2. 0
built on Mar 4 2010 12:35:30, gcc: 4.4.3
Input #0, aac, from ‘temp_audio.ogg’:
Duration: 00:40:25.85, bitrate: 217 kb/s
Stream #0.0: Audio: aac, 48000 Hz, stereo, s16, 217 kb/s

Seems stream 0 codec frame rate differs from container frame rate: 47.95 (48000/1001) -> 23.98 (48000/2002)
Input #1, h264, from ‘temp_video.avi’:
Duration: N/A, bitrate: N/A
Stream #1.0: Video: h264, yuv420p, 1280×720, 23.98 tbr, 1200k tbn, 47.95 tbc
Output #0, avi, to ‘myvideo.avi’:
Stream #0.0: Video: libx264, yuv420p, 1280×720, q=2-31, 90k tbn, 23.98 tbc
Stream #0.1: Audio: mp2, 48000 Hz, stereo, s16, 64 kb/s
Stream mapping:
Stream #1.0 -> #0.0
Stream #0.0 -> #0.1
Press [q] to stop encoding
[NULL @ 0x8c63110]error, non monotone timestamps 62562 >= 62562=3236.6kbits/s
av_interleaved_write_frame(): Error while opening file

Cleaning files

I’ve proved this http://ubuntuforums.org/showthread.php?t=786095&page=34
but didn’t work ;-(

PS: I keep looking in Google ;-)

By: Espen Klem

Espen Klem — Sun, 23 Jan 2011 17:58:20 +0000

Dave, I had the same problem using “-oac copy”. Changed it to “-oac mp3lame” making the whole line look like this:

mencoder [filename].mkv -ovc xvid -xvidencopts fixed_quant=4 -vf harddup -oac mp3lame -o [filename].avi

I guess the recoding does the trick.

By: starglider

starglider — Fri, 31 Dec 2010 10:59:56 +0000

Python rulez!
Thank you for this script.

By: ms

ms — Thu, 02 Dec 2010 22:28:18 +0000

replace all instances of %s with ‘%s’ to fix the “weird filename” problem
for example, this line

os.system(“mkvextract tracks %s 1:temp_video.avi 2:temp_audio.ogg 3:%s.srt” % (filename,basename) )

should be

os.system(“mkvextract tracks ‘%s’ 1:temp_video.avi 2:temp_audio.ogg 3:’%s’.srt” % (filename,basename) )

By: Peter

Peter — Sat, 23 Oct 2010 20:23:33 +0000

Thanks!

A real lifesaver. ffmpeg failed me on this.

By: previso

previso — Tue, 28 Sep 2010 03:05:11 +0000

http://kde-apps.org/content/show.php/Mkv+2+Avi+%28Matroska+to+Avi%29?content=74842

A Kommander script with GUI.
**REM** kmdr-executor mkv2avi-2.kmdr from console

By: Flojo

Flojo — Thu, 15 Jul 2010 13:48:06 +0000

For the \xc3 issue you need to remove

‘-s 1280×720′

For the original script I was getting the following error

mp2 @ 0x8cf19f0]encoding 6 channel(s) is not allowed in mp2
Error while opening codec for output stream #0.1 – maybe incorrect parameters such as bit_rate, rate, width or height

Anyone know how to fix that?

By: Zo

Zo — Fri, 07 May 2010 16:43:36 +0000

None of these work for me, they all fail in one way or another.

@brahmix
this returns an error “SyntaxError: Non-ASCII character ‘\xc3′ in file ./mkv2avi on line 31, but no encoding declared”

this command doesn’t work either

ffmpeg -i infilename.m4v ntsc-target vcd outmoviefilename.avi

I get

“Unable to find a suitable output format for ‘ntsc-target’” as the final error, but it required me to add ntsc prefix for -target.

anyone have any ideas?