[FFmpeg-user] MTS to MP4 lossless conversion issues
Nick Gilmour
nickeforos at gmail.com
Wed Jul 12 18:16:49 EEST 2017
Thanks for the reponses!
*What is the output of$ ffmpeg -i 00000.ffmpeg1.mp4??*
ffmpeg version 3.3.2-1~16.04.york1 Copyright (c) 2000-2017 the FFmpeg
developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-version='1~16.04.york1'
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
--enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
--enable-libcdio --enable-libflite --enable-libfontconfig
--enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm
--enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt
--enable-libopus --enable-libpulse --enable-librubberband --enable-libshine
--enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
--enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid
--enable-libzmq --enable-libzvbi --enable-omx --enable-openal
--enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883
--enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264
--enable-shared
WARNING: library configuration mismatch
avcodec configuration: --prefix=/usr --extra-version='1~16.04.york1'
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
--enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
--enable-libcdio --enable-libflite --enable-libfontconfig
--enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm
--enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt
--enable-libopus --enable-libpulse --enable-librubberband --enable-libshine
--enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
--enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid
--enable-libzmq --enable-libzvbi --enable-omx --enable-openal
--enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883
--enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264
--enable-shared --enable-version3 --disable-doc --disable-programs
--enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract
--enable-libvo_amrwbenc --enable-netcdf
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '00000.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Duration: 00:00:15.10, start: 0.000000, bitrate: 12936 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv),
1280x720 [SAR 1:1 DAR 16:9], 12760 kb/s, 25 fps, 25 tbr, 90k tbn, 100 tbc
(default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, stereo,
fltp, 192 kb/s (default)
Metadata:
handler_name : SoundHandler
Side data:
audio service type: main
At least one output file must be specified
I have rerun the command and now I'm getting a WARNING: library
configuration mismatch. I thinks it's because the Software Center forced me
to remove a package...
*Subtitles? Interesting, what do they contain? :)*
Actually there are no subtitles. This is weird...
To me this AVCHD format is uncomfortable. How am I supposed to separate the
files? I want to have everything in a single file. Anyway, I have decided
to convert the MTS files to mp4 and keep the AVCHD structure as a backup. I
see no quality loss with the generated mp4.
On Tue, Jul 11, 2017 at 1:34 PM, Moritz Barsnick <barsnick at gmx.net> wrote:
> On Mon, Jul 10, 2017 at 15:03:49 +0200, Nick Gilmour wrote:
> > *track 1: codec frame size is not set*
> > 1. I googled also about this but I still don't know what does that mean
> and
> > how I should deal with it. Is it an error or should I change something?
>
> It about the audio track and I think it shouldn't matter. (I don't know
> absolutely for sure though.)
>
> > 2. I also see with VLC > Tools > Codec Information that the output file
> has
> > 25 frames per sec, whereas the input file has 50 frames per sec. This
> > although the output of the previous command shows 50 fps for the output
> > file. So what is going on? Is VLC wrong? How can I get the 50 fps in the
> > output file? Do 25 fps less mean reduced quality?
>
> If you copy the stream ("-c[:x] copy"), no quality is reduced.
>
> VLC may be wrong. See this (from the input):
> > Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448),
> yuv420p(tv, progressive), 1280x720 [SAR 1:1 DAR 16:9], 50 fps, 25 tbr, 90k
> tbn, 100 tbc
>
> "50 fps" is the frame rate given by the demuxer, "25 tbr" is the frame
> rate guessed (by ffmpeg) from actual packets' timestamps. If you dump
> all frames' info with ffprobe, we could double-check this conclusion.
>
> I don't understand why VLC sees differences in the two files though. It
> would be interesting to see what the container vs. stream metadata
> says. It could be ffmpeg is adding info to the MP4 which the MTS just
> didn't have (because it e.g. only has per-stream metadata). Or
> something like that.
>
> What is the output of
> $ ffmpeg -i 00000.ffmpeg1.mp4
> ??
>
> Can you provide such an MTS sample? (As short as possibly, but able to
> reproduce the issue.)
>
> > 3. The AVCHD format comes also with other files except MTS e.g. CPI. Are
> > these important for the conversion or for use with video editing tools
> > like Kdenlive?
>
> The CPI file apparently holds extra metadata, but ffmpeg can't make use
> of it. Final Cut Pro and iMovie apparently can. (I keep writing
> "apparently", because I googled. Did you?
> http://www.pavtube.com/avchd-cpi-file-format.html)
>
> > Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
> 0x0090), 1280x720
>
> Subtitles? Interesting, what do they contain? :)
>
> > Regards
> > Nick
>
> Cheers,
> Moritz
>
>
> > $ ffmpeg -i 00000.MTS -vcodec copy -acodec copy -sn 00000.ffmpeg1.mp4
> > ffmpeg version 3.3.2-1~16.04.york1 Copyright (c) 2000-2017 the FFmpeg
> developers
> > built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
> > configuration: --prefix=/usr --extra-version='1~16.04.york1'
> --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
> --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
> --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa
> --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
> --enable-libcdio --enable-libflite --enable-libfontconfig
> --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm
> --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt
> --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine
> --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
> --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx
> --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid
> --enable-libzmq --enable-libzvbi --enable-omx --enable-openal
> --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883
> --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264
> --enable-shared
> > libavutil 55. 58.100 / 55. 58.100
> > libavcodec 57. 89.100 / 57. 89.100
> > libavformat 57. 71.100 / 57. 71.100
> > libavdevice 57. 6.100 / 57. 6.100
> > libavfilter 6. 82.100 / 6. 82.100
> > libavresample 3. 5. 0 / 3. 5. 0
> > libswscale 4. 6.100 / 4. 6.100
> > libswresample 2. 7.100 / 2. 7.100
> > libpostproc 54. 5.100 / 54. 5.100
> > Input #0, mpegts, from '00000.MTS':
> > Duration: 00:00:15.10, start: 0.888889, bitrate: 13700 kb/s
> > Program 1
> > Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448),
> yuv420p(tv, progressive), 1280x720 [SAR 1:1 DAR 16:9], 50 fps, 25 tbr, 90k
> tbn, 100 tbc
> > Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
> stereo, fltp, 192 kb/s
> > Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
> 0x0090), 1280x720
> > [mp4 @ 0x55a37b91a4a0] track 1: codec frame size is not set
> > Output #0, mp4, to '00000.ffmpeg1.mp4':
> > Metadata:
> > encoder : Lavf57.71.100
> > Stream #0:0: Video: h264 (High) ([33][0][0][0] / 0x0021),
> yuv420p(tv, progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 50 fps, 25
> tbr, 90k tbn, 90k tbc
> > Stream #0:1: Audio: ac3 ([165][0][0][0] / 0x00A5), 48000 Hz, stereo,
> fltp, 192 kb/s
> > Stream mapping:
> > Stream #0:0 -> #0:0 (copy)
> > Stream #0:1 -> #0:1 (copy)
> > Press [q] to stop, [?] for help
> > frame= 377 fps=0.0 q=-1.0 Lsize= 23852kB time=00:00:15.07
> bitrate=12964.2kbits/s speed= 247x
> > video:23490kB audio:354kB subtitle:0kB other streams:0kB global
> headers:0kB muxing overhead: 0.033670%
>
> > _______________________________________________
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> > ffmpeg-user at ffmpeg.org
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> >
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