[SOLVED] .MTS to .mkv

[Feathers McGraw]

Hi all,

My camera records videos in "AVCHD Lite" format, so I have a bunch of .MTS files I would like to edit.

I've installed Avidemux (Qt), which seems to have a problem with playing the audio (difficult to describe but it sounds like it's out of sync/echoey/underwater) - I believe it is something to do with H.264 B frames.

So I set out to convert the file into a different format.

This thread from the archives allowed me to convert the .MTS files into .avi files which now play well in Avidemux, but using a Microsoft format is a bit of a thorn in my side.

The command I'm using to convert to .avi is:

ffmpeg -y -i "$file" -f avi -vcodec mpeg4 -b 800k -acodec ac3 -ab 128k -s hd720 "$out_file"

Is anyone able to help me putting together the right options to convert the .MTS files into .mkv format? I've tried skimming through the man pages but it's a bit daunting

Thanks,

Feathers

[vinnywright]

you SHOULD be abel to do a simpel convert with ffmpeg , like

ffmpeg -i somefile.mts somefile2.mkv

VINNY

[Feathers McGraw]

Thanks for replying!

I just tried that, the output was:

feathers-mcgraw@62-West-Wallaby-Street:/data/Videos/Lake_District_2013$ ffmpeg -i Filter_part_1_overview.MTS Filter_part_1_overview.mkv
ffmpeg version 0.8.6-6:0.8.6-1ubuntu2, Copyright (c) 2000-2013 the Libav developers
  built on Mar 30 2013 22:20:06 with gcc 4.7.2
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.

Seems stream 0 codec frame rate differs from container frame rate: 100.00 (100/1) -> 25.00 (25/1)
Input #0, mpegts, from 'Filter_part_1_overview.MTS':
  Duration: 00:07:27.71, start: 0.888889, bitrate: 13779 kb/s
  Program 1 
    Stream #0.0[0x1011]: Video: h264 (High), yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 100 tbc
    Stream #0.1[0x1100]: Audio: ac3, 48000 Hz, stereo, s16, 192 kb/s
    Stream #0.2[0x1200]: Subtitle: pgssub
[buffer @ 0x21aee80] w:1280 h:720 pixfmt:yuv420p
Output #0, matroska, to 'Filter_part_1_overview.mkv':
  Metadata:
    encoder         : Lavf53.21.1
    Stream #0.0: Video: mpeg4, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 1k tbn, 25 tbc
    Stream #0.1: Audio: libvorbis, 48000 Hz, stereo, s16
    Stream #0.2: Subtitle: ass, 200 kb/s                                                                                                                                                        
Stream mapping:                                                                                                                                                                                 
  Stream #0.0 -> #0.0                                                                                                                                                                           
  Stream #0.1 -> #0.1                                                                                                                                                                           
  Stream #0.2 -> #0.2
Press ctrl-c to stop encoding
[ass @ 0x21adf40] Only SUBTITLE_ASS type supported.
Subtitle encoding failed

...and a 4.5KiB file was produced (original MTS was 735.4MiB)



Feathers

[vinnywright]

Humm worth a shot .....it usualy works for me that way with other file types , but I have no .mts files to play with .

VINNY

[Feathers McGraw]

Thanks, I don't know much about multimedia formats...

Do you think it's possible to do a two step thing - decompress the audio and video, and then encode it again?

Feathers

[tek_heretik]

I install every decoder in the repository, lol, eventually one of them will work, sorry for the stupid suggestion, but that's what works for me.

Edit: If you don't want to install a lot of decoders, read the descriptions, I know at least one of them does the job.

[vinnywright]

Humm I acquired a test .mts and it converted fine @hear

vinny@vinny-HP-G62:~/Downloads$ ffmpeg -i 00007.MTS test1.mkv
WARNING: gnome-keyring:: couldn't connect to: /run/user/vinny/keyring-9mW2Ld/pkcs11: No such file or directory
ffmpeg version 0.8.6-6:0.8.6-0ubuntu0.12.10.1, Copyright (c) 2000-2013 the Libav developers
  built on Apr  2 2013 17:07:34 with gcc 4.7.2
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
Input #0, mpegts, from '00007.MTS':
  Duration: 00:00:03.62, start: 0.369856, bitrate: 15383 kb/s
  Program 1 
    Stream #0.0[0x1011]: Video: h264 (High), yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc
    Stream #0.1[0x1100]: Audio: ac3, 48000 Hz, stereo, s16, 192 kb/s
[buffer @ 0x9fb5c60] w:1280 h:720 pixfmt:yuv420p
[libx264 @ 0x9fb4ac0] using SAR=1/1
[libx264 @ 0x9fb4ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
[libx264 @ 0x9fb4ac0] profile Main, level 3.2
[libx264 @ 0x9fb4ac0] 264 - core 123 r2189 35cf912 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=1 b_bias=0 direct=1 weightb=0 open_gop=1 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.25 aq=1:1.00
Output #0, matroska, to 'test1.mkv':
  Metadata:
    encoder         : Lavf53.21.1
    Stream #0.0: Video: libx264, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], q=-1--1, 1k tbn, 50 tbc
    Stream #0.1: Audio: libvorbis, 48000 Hz, stereo, s16
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Press ctrl-c to stop encoding
frame=  182 fps= 11 q=31.0 Lsize=    1110kB time=3.62 bitrate=2512.8kbits/s    
video:1064kB audio:40kB global headers:4kB muxing overhead 0.280719%
frame I:1     Avg QP:25.50  size: 69543
[libx264 @ 0x9fb4ac0] frame P:65    Avg QP:25.28  size: 12148
[libx264 @ 0x9fb4ac0] frame B:116   Avg QP:31.29  size:  1979
[libx264 @ 0x9fb4ac0] consecutive B-frames:  1.1% 15.4% 79.1%  4.4%
[libx264 @ 0x9fb4ac0] mb I  I16..4: 44.2%  0.0% 55.8%
[libx264 @ 0x9fb4ac0] mb P  I16..4:  2.1%  0.0%  1.1%  P16..4: 45.7%  6.8%  5.0%  0.0%  0.0%    skip:39.2%
[libx264 @ 0x9fb4ac0] mb B  I16..4:  0.1%  0.0%  0.1%  B16..8: 31.3%  1.6%  0.4%  direct: 0.3%  skip:66.2%  L0:41.7% L1:53.1% BI: 5.2%
[libx264 @ 0x9fb4ac0] coded y,uvDC,uvAC intra: 38.2% 43.6% 4.2% inter: 6.5% 6.6% 0.0%
[libx264 @ 0x9fb4ac0] i16 v,h,dc,p: 39% 30%  9% 21%
[libx264 @ 0x9fb4ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 15% 18%  5%  8%  9%  8%  5%  7%
[libx264 @ 0x9fb4ac0] i8c dc,h,v,p: 64% 18% 16%  2%
[libx264 @ 0x9fb4ac0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x9fb4ac0] ref P L0: 71.7%  6.1% 15.8%  6.3%
[libx264 @ 0x9fb4ac0] ref B L0: 91.0%  9.0%
[libx264 @ 0x9fb4ac0] kb/s:2392.62
vinny@vinny-HP-G62:~/Downloads$

beautiful results and a reduction in file size from 6.6Mib in the original to 1.1 in the .mkv but looks just as high deff as the original

It looks like yours is quitting on the subtitle conversion ,, so if you dont care about the subtitle try suppressing the subtitle from being added with the -sn option like

ffmpeg -i somefile.mts -sn somefile.mkv

VINNY

EDDIT: allso see that you have "libx264-123" and "libavcodec-extra-53" installed

[Xplorer4x4]

Try mkvmerge. It has cli and gui options. Not familiar with the syntax for cli off hand but it's an excellent program with frequent updates.

[Rog132]

Bad source ?

You have warning/error:

Seems stream 0 codec frame rate differs from container frame rate: 100.00 (100/1) -> 25.00 (25/1)

If you search with the error/warning message - a pick:

- http://ffmpeg-users.933282.n4.nabble...-td938596.html

The video container specifies a framerate, as does the video stream
itself. In some cases, usually caused by badly written encoding
programs, the two can disagree. When this happens, ffmpeg is
obviously forced to believe one and not the other.

If ffmpeg picks the wrong one, you can, ask you mentioned, force the
other framerate if you believe it to be correct...

FFMPEG / MKV exaples : http://trac.ffmpeg.org/wiki/x264EncodingGuide - those examples seem to work with the real ffmpeg (2.0).

Note ! The Ubuntu is using the LIBAV - earlier: http://www.kubuntuforums.net/showthr...v-Winff-ffmpeg

[Feathers McGraw]

It looks like yours is quitting on the subtitle conversion ,, so if you dont care about the subtitle try suppressing the subtitle from being added with the -sn option like

ffmpeg -i somefile.mts -sn somefile.mkv

VINNY

Thanks for that, just tried it and it worked - curious because there shouldn't have been any subtitles in the file at all (perhaps it was GPS data?).

You guys (and girls?) are awesome

[vinnywright]

Thanks for that, just tried it and it worked - curious because there shouldn't have been any subtitles in the file at all (perhaps it was GPS data?).

You guys (and girls?) are awesome

Perhaps ,,,,,, I was going on the ffmpeg output you posted in #3 where ffmpeg was showing 3 streams a 0.0 , 0.1 & 0.2 ; 0.2 was seen as a subtitle stream and the ffmpeg output stops with a "subtitle encoding failed"

you can find more examples @hear http://trac.ffmpeg.org/wiki/x264EncodingGuide (check to see you have those packages I refrenced in post #7)

and look at "man ffmpeg" in a terminal.

VINNY

[oshunluvr]

Try:

avconv -i somefile.mts somefile.avi

[Feathers McGraw]

Thanks, avconv also works, I found it shortly after my original post. Luckily most of the commands are the same