How to batch convert/multiplex any files with ffmpeg

[diimaan]

I am trying to use qaac for audio conversion and using ffmpeg to mux it back,

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -vf "scale=1280:trunc(ow/a/2)*2:flags=lanczos" -c:v libx264 -profile:v high -preset slow -tune film -crf 20 -an "C:\newconverts\%%~na.m4v"

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -f wav -acodec pcm_f32le - | qaac --cvbr 256 --ignorelength --rate 48000 --native-resampler=bats,127 --threading -o "C:\newconverts\%%~na.m4a"

for %%a in ("C:\newconverts\*.*") do ffmpeg -i "%%~na.m4v" -i "%%~na.m4a" -c:v copy -c:a copy "C:\newconverts\%%~na.mp4"
pause

DEL "C:\newconverts\*.m4v"
DEL "C:\newconverts\*.m4a"

But I get an error with the piping line.

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -f wav -acodec pcm_f32le - | qaac --cvbr 256 --ignorelength --rate 48000 --native-resampler=bats,127 --threading -o "C:\newconverts\%%~na.m4a"

I have attached the screenshot.

[Baldrick]

Have you tried it without the batch? Same error?

But I have never tried ffmpeg with piping....so I have no idea....You could also try ask in https://ffmpeg.zeranoe.com/forum/index.php

[diimaan]

Have you tried it without the batch? Same error?

But I have never tried ffmpeg with piping....so I have no idea....You could also try ask in https://ffmpeg.zeranoe.com/forum/index.php

Tried the second piece of code, for audio alone. It still shows the same error. Thanks

[anana]

Have you tried it without the batch? Same error?

But I have never tried ffmpeg with piping....so I have no idea....You could also try ask in https://ffmpeg.zeranoe.com/forum/index.php

Tried the second piece of code, for audio alone. It still shows the same error. Thanks

What about this

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -acodec pcm_s32le -f wav - | qaac --threading --cvbr 256 --ignorelength --rate 48000 --native-resampler=bats,127 - -o "C:\newconverts\%%~na.m4a"

[diimaan]

What about this

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -acodec pcm_s32le -f wav - | qaac --threading --cvbr 256 --ignorelength --rate 48000 --native-resampler=bats,127 - -o "C:\newconverts\%%~na.m4a"

You are awesome...
It works as a single code, checking now with a batch!

[anana]

You are awesome...
It works as a single code, checking now with a batch!

Good luck

[diimaan]

Now I am getting an error "Invalid argument" for m4v while muxing

ffmpeg -i "*.m4v" -i "*.m4a" -c:v copy -c:a copy "C:\newconverts\%%~na.mp4"

[poisondeathray]

Now I am getting an error "Invalid argument" for m4v while muxing

ffmpeg -i "*.m4v" -i "*.m4a" -c:v copy -c:a copy "C:\newconverts\%%~na.mp4"

ffmpeg cannot use wild cards like "*"

Before in the batch it was Windows dos that used the wildcard "*"

You need to format it in the same manner with a FOR statement such as the previous batch. Usually you would use a named TEMP file in a TEMP directory for the intermediate files, then DEL the temp files in the batch command

[diimaan]

ffmpeg cannot use wild cards like "*"

Before in the batch it was Windows dos that used the wildcard "*"

You need to format it in the same manner with a FOR statement such as the previous batch. Usually you would use a named TEMP file in a TEMP directory for the intermediate files, then DEL the temp files in the batch command

This is my complete code

for %%a in ("C:\newconverts\*.*") do ffmpeg -i "%%~na.m4v" -i "%%~na.m4a" -c:v copy -c:a copy "C:\newconverts\%%~na.mp4"
pause

[anana]

This is my complete code

for %%a in ("C:\newconverts\*.*") do ffmpeg -i "%%~na.m4v" -i "%%~na.m4a" -c:v copy -c:a copy "C:\newconverts\%%~na.mp4"
pause

for %%a in ("C:\newconverts\*.*") do ffmpeg -i "%%~na.m4v" -i "%%~na.m4a" -vcodec copy -acodec copy -map 0:0 -map 1:0 "C:\newconverts\%%~na.mp4"
pause

[diimaan]

for %%a in ("C:\newconverts\*.*") do ffmpeg -i "%%~na.m4v" -i "%%~na.m4a" -vcodec copy -acodec copy -map 0:0 -map 1:0 "C:\newconverts\%%~na.mp4"
pause

.m4v: No such file or directory

[diimaan]

I even tried with MP4Box as a muxer in the batch! It also throws the error with video input. I tried changing the m4v to mp4 and mkv!
Still no dice...

[anana]

I am trying to use qaac for audio conversion and using ffmpeg to mux it back,

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -vf "scale=1280:trunc(ow/a/2)*2:flags=lanczos" -c:v libx264 -profile:v high -preset slow -tune film -crf 20 -an "C:\newconverts\%%~na.m4v"

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -f wav -acodec pcm_f32le - | qaac --cvbr 256 --ignorelength --rate 48000 --native-resampler=bats,127 --threading -o "C:\newconverts\%%~na.m4a"

for %%a in ("C:\newconverts\*.*") do ffmpeg -i "%%~na.m4v" -i "%%~na.m4a" -c:v copy -c:a copy "C:\newconverts\%%~na.mp4"
pause

DEL "C:\newconverts\*.m4v"
DEL "C:\newconverts\*.m4a"

Maybe, you should use mine

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -vf "scale=1280:trunc(ow/a/2)*2:flags=lanczos" -c:v libx264 -profile:v high -preset slow -tune film -crf 20 -an "C:\newconverts\%%~na.264"

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -acodec pcm_s32le -f wav - | qaac --threading --cvbr 256 --ignorelength --rate 48000 --native-resampler=bats,127 --adts - -o "C:\newconverts\%%~na.aac"

for %%a in ("C:\newconverts\*.*") do ffmpeg -i "%%~na.264" -i "%%~na.aac" -absf aac_adtstoasc -vcodec copy -acodec copy -map 0:0 -map 1:0 "C:\newconverts\%%~na.mp4"
pause

DEL "C:\newconverts\*.264"
DEL "C:\newconverts\*.aac"

[diimaan]

Maybe, you should use mine

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -vf "scale=1280:trunc(ow/a/2)*2:flags=lanczos" -c:v libx264 -profile:v high -preset slow -tune film -crf 20 -an "C:\newconverts\%%~na.264"

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -acodec pcm_s32le -f wav - | qaac --threading --cvbr 256 --ignorelength --rate 48000 --native-resampler=bats,127 --adts - -o "C:\newconverts\%%~na.aac"

for %%a in ("C:\newconverts\*.*") do ffmpeg -i "%%~na.264" -i "%%~na.aac" -absf aac_adtstoasc -vcodec copy -acodec copy -map 0:0 -map 1:0 "C:\newconverts\%%~na.mp4"
pause

DEL "C:\newconverts\*.264"
DEL "C:\newconverts\*.aac"

Now it shows

.264: No such file or directory

[diimaan]

A general question to @Baldrick! Is it possible to do a two pass encode with ffmpeg batch?

[ConverterCrazy]

ConverterCrazy: And did you get any working method? Any script you can share?

@Baldrick

My apologies, can't say how embarrassed I am for having not replied to your very old reply.

And, I am sorry.

I used this command in a batch file for bulk conversion:

for %%F in (*.MP4) do "C:\7z\ffmpeg-20130813-git-bbbd959-win32-static\bin\ffmpeg.exe" -i "%%F" -vcodec copy -acodec copy "%%~dF%%~pF%%~nF.mkv"
pause


while substituting (*.mp4) with (*.avi) and (*.flv) in each successive line of the batch file.

The pause command helped me to know that "all went fine".

Thanks.

[diimaan]

Well, I did not get the qaac and muxing thingy work. But I came at a workaround.

I have downloaded ffmpeg from http://oss.netfarm.it/mplayer-win32.php and downloaded the libfdk_aac.dll which was linked there. (Both 64 bit versions)

Now I am able to get a good quality aac file with ffmpeg and do not have to worry about the pipiing et al...
(P.S. If anyone able to get them working please share though )

My batch for running crf and 2-pass encodes goes here... I have added a small piece of code in resizing, which I came across in www. It will resize only if the files are having width lesser than "1280".

crf

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -vf "scale=min(1280\,iw):trunc(ow/a/2)*2:flags=spline" -c:v libx264 -profile:v high444 -preset slow -tune film -crf 20 -ac 2 -ar 48000 -c:a libfdk_aac -vbr 5 -afterburner 1 "C:\newconverts\%%~na.mp4"

pause

2-pass

for %%a in ("C:\converts\*.*") do ffmpeg -y -i "%%a" -vf "scale=min(1280\,iw):trunc(ow/a/2)*2:flags=spline" -b:v 3000k -pass 1 -c:v libx264 -profile:v high444 -preset slow -tune film -ac 2 -ar 48000 -c:a libfdk_aac -b:a 224k -afterburner 1 -f mp4 NUL

for %%a in ("C:\converts\*.*") do ffmpeg -i "%%a" -vf "scale=min(1280\,iw):trunc(ow/a/2)*2:flags=spline" -b:v 3000k -pass 2 -c:v libx264 -profile:v high444 -preset slow -tune film -ac 2 -ar 48000 -c:a libfdk_aac -b:a 224k -afterburner 1 "C:\newconverts\%%~na.mp4"

pause

DEL "*.temp"
DEL "*.mbtree"
DEL "*.log"

Thanks everyone for trying to help me with my broken knowledge of encoding... Especially @anana for being so patient with me

[RealPetChicken]

With ffmpeg can you convert and multiplex almost every video file. And as it's a command line converter can you batch convert all your files at once with a basic windows/dos script. Like convert all your video files to mp4 with custom ffmpeg commands. Convert all video files audio to wav.


Tools:
ffmpeg



Guide:
Download ffmpeg from http://ffmpeg.zeranoe.com/builds/ and choose latest 32bit Static version.



Extract the ffmpeg.exe from the 7z file with 7zip and put it in same folder as your video files.
Create a folder named newfiles in your video folder.

[Attachment 18041 - Click to enlarge]



Start notepad and type the following to convert all your video files to mp4 with h264 video and aac audio. See more examples at the bottom of this guide.

for %%a in ("*.*") do ffmpeg -i "%%a" -c:v libx264 -preset slow -crf 20 -c:a libvo_aacenc -b:a 128k "newfiles\%%~na.mp4"
pause

Now save it, File->Save as, change to All files under Save as type and save it as batch.bat.

[Attachment 18071 - Click to enlarge]



Just double click on the batch.bat to start converting. You will see any errors in the command line box.

[Attachment 18040 - Click to enlarge]



When it's done just press enter in the command line window.

[Attachment 18070 - Click to enlarge]



Done!



Batch ffmpeg examples:

Convert all *.avi files to mp4 with h264 and aac audio

for %%a in ("*.avi") do ffmpeg -i "%%a" -c:v libx264 -preset slow -crf 20 -c:a libvo_aacenc -b:a 128k "newfiles\%%~na.mp4"
pause

Convert *.mkv files to mp4 and just copy the video and audio streams

for %%a in ("*.mkv") do ffmpeg -i "%%a" -vcodec copy -acodec copy "newfiles\%%~na.mp4"
pause

Convert *.* files to wav audio

for %%a in ("*.*") do ffmpeg -i "%%a" "newfiles\%%~na.wav"
pause

Multiplex *.avi and *.wav files with same name to avi

for %%a in ("*.avi") do ffmpeg -i "%%~na.wav" -i "%%~na.avi" -acodec copy -vcodec copy "newfiles\%%~na.avi"
pause

Other tips:
Put ffmpeg.exe in for example C:\ffmpeg and make the newfiles folder under C:\newfiles and you never have to move around the ffmpeg.exe and make new newfiles folder all the time. You just make the batch.bat file in the video folder.
Your batch.bat script should look this then:

for %%a in ("*.*") do "C:\ffmpeg\ffmpeg" -i "%%a" -c:v libx264 -preset slow -crf 20 -c:a libvo_aacenc -b:a 128k "C:\newfiles\%%~na.mp4"
pause

More ffmpeg examples:

http://ffmpeg.org/trac/ffmpeg/wiki
http://cfc.kizzx2.com/index.php/muxing-audio-and-video-with-ffmpeg/



ffmpeg commands explained:

http://ffmpeg.org/ffmpeg.html

Anyone know how to strip or remove the chapters on the new create files. Like the MKV i have contain chapters, i don't want those on the new created mp4.

Thank you a thousand times for the batch codes

[hemstock]

I have a m4v with multiple audio tracks and multiple subtitle tracks. The following only copies the default audio and no subtitles. How do I change it to add more?

for %%a in ("*.14v") do ffmpeg -i "%%a" -vcodec copy -acodec copy "newfiles\%%~na.mkv"

[hemstock]

After some digging around I changed it to

ffmpeg -i "file.m4v" -map 0 -c copy file1.mkv

which returns an error "Could not write header for output file #0 (incorrect codec parameters ?): Error number -40 occurred
Conversion failed!"

[kieranjol]

Mkv doesn't support data tracks. Add -dn to disable them.

Can you post the full uncut console output just to be sure? Ffmpeg is usually more specific than "error 40"

P.s your map 0 solution generally works as long as the chosen container supports all the streams you're adding.

[hemstock]

ffmpeg -i "1.m4v" -map 0 -c copy -dn "output\1.mkv"
ffmpeg version 2.2.2 Copyright (c) 2000-2014 the FFmpeg developers
  built on May 22 2014 19:56:44 with gcc 4.8.2 (GCC)
  configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
  libavutil      52. 66.100 / 52. 66.100
  libavcodec     55. 52.102 / 55. 52.102
  libavformat    55. 33.100 / 55. 33.100
  libavdevice    55. 10.100 / 55. 10.100
  libavfilter     4.  2.100 /  4.  2.100
  libswscale      2.  5.102 /  2.  5.102
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0068e900] stream 0, timescale not set
[mov,mp4,m4a,3gp,3g2,mj2 @ 0068e900] Stream #4: not enough frames to estimate rate; consider increasing probesize
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.m4v':
  Metadata:
    major_brand     : M4V
    minor_version   : 0
    compatible_brands: M4V M4A mp42isom
    hd_video        : 1
    media_type      : 10
  Duration: 00:55:01.59, start: 0.000000, bitrate: 11337 kb/s
    Chapter #0.0: start 0.000000, end 6.006000
    Metadata:
      title           : 1
    Chapter #0.1: start 6.006000, end 306.555000
    Metadata:
      title           : 2
    Chapter #0.2: start 306.555000, end 748.245000
    Metadata:
      title           : 3
    Chapter #0.3: start 748.245000, end 1131.547000
    Metadata:
      title           : 4
    Chapter #0.4: start 1131.547000, end 1605.854000
    Metadata:
      title           : 5
    Chapter #0.5: start 1605.854000, end 2124.371000
    Metadata:
      title           : 6
    Chapter #0.6: start 2124.371000, end 2598.304000
    Metadata:
      title           : 7
    Chapter #0.7: start 2598.304000, end 3191.730000
    Metadata:
      title           : 8
    Chapter #0.8: start 3191.730000, end 3271.268000
    Metadata:
      title           : 9
    Chapter #0.9: start 3271.268000, end 3271.476000
    Metadata:
      title           : 10
    Stream #0:0(rus): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 164 kb/s (default)
    Metadata:
      creation_time   : 2015-04-27 09:38:46
    Stream #0:1(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720, 3994 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2015-04-27 09:38:46
    Stream #0:2(rus): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 164 kb/s
    Metadata:
      creation_time   : 2015-04-27 09:38:46
    Stream #0:3(rus): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 163 kb/s
    Metadata:
      creation_time   : 2015-04-27 09:38:46
    Stream #0:4: Video: mjpeg, yuvj444p(pc), 2400x2400 [SAR 1:1 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
    Stream #0:5(rus): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 164 kb/s
    Metadata:
      creation_time   : 2015-04-27 09:42:16
    Stream #0:6(rus): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 164 kb/s
    Metadata:
      creation_time   : 2015-04-27 13:15:11
    Stream #0:7(rus): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 163 kb/s
    Metadata:
      creation_time   : 2015-04-27 13:15:54
    Stream #0:8(rus): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 164 kb/s
    Metadata:
      creation_time   : 2015-05-02 11:26:53
    Stream #0:9(rus): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 164 kb/s
    Metadata:
      creation_time   : 2015-05-02 11:27:38
    Stream #0:10(ukr): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 164 kb/s
    Metadata:
      creation_time   : 2015-05-02 11:28:28
    Stream #0:11(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 164 kb/s
    Metadata:
      creation_time   : 2015-05-02 11:31:39
    Stream #0:12(rus): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:42:02
    Stream #0:13(rus): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:42:40
    Stream #0:14(rus): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:43:21
    Stream #0:15(rus): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:16(rus): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:17(rus): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:18(rus): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:19(ukr): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:20(eng): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:21(rus): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s (default)
    Metadata:
      creation_time   : 2015-05-02 15:56:55
    Stream #0:22(eng): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s
    Metadata:
      creation_time   : 2015-05-02 16:01:22
    Stream #0:23(rus): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s
    Metadata:
      creation_time   : 2015-05-02 16:03:11
    Stream #0:24(rus): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s
    Metadata:
      creation_time   : 2015-05-02 16:03:38
    Stream #0:25(rus): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s
    Metadata:
      creation_time   : 2015-05-02 17:40:17
    Stream #0:26(eng): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s
    Metadata:
      creation_time   : 2015-05-02 17:40:17
    Stream #0:27(eng): Subtitle: mov_text (text / 0x74786574)
    Metadata:
      creation_time   : 2015-05-02 17:40:17
    Stream #0:28(eng): Video: mjpeg (jpeg / 0x6765706A), yuvj420p(pc), 640x360 [SAR 1:1 DAR 16:9], 0 kb/s, 0k fps, 23.98 tbr, 1k tbn, 1k tbc
    Metadata:
      creation_time   : 2015-05-02 17:40:25
[matroska @ 01fcb6a0] Subtitle codec 94213 is not supported.
Output #0, matroska, to 'output\1.mkv':
  Metadata:
    major_brand     : M4V
    minor_version   : 0
    compatible_brands: M4V M4A mp42isom
    media_type      : 10
    hd_video        : 1
    encoder         : Lavf55.33.100
    Chapter #0.0: start 0.000000, end 6.006000
    Metadata:
      title           : 1
    Chapter #0.1: start 6.006000, end 306.555000
    Metadata:
      title           : 2
    Chapter #0.2: start 306.555000, end 748.245000
    Metadata:
      title           : 3
    Chapter #0.3: start 748.245000, end 1131.547000
    Metadata:
      title           : 4
    Chapter #0.4: start 1131.547000, end 1605.854000
    Metadata:
      title           : 5
    Chapter #0.5: start 1605.854000, end 2124.371000
    Metadata:
      title           : 6
    Chapter #0.6: start 2124.371000, end 2598.304000
    Metadata:
      title           : 7
    Chapter #0.7: start 2598.304000, end 3191.730000
    Metadata:
      title           : 8
    Chapter #0.8: start 3191.730000, end 3271.268000
    Metadata:
      title           : 9
    Chapter #0.9: start 3271.268000, end 3271.476000
    Metadata:
      title           : 10
    Stream #0:0(rus): Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, 164 kb/s (default)
    Metadata:
      creation_time   : 2015-04-27 09:38:46
    Stream #0:1(eng): Video: h264 (avc1 / 0x31637661), yuv420p, 1280x720, q=2-31, 3994 kb/s, 23.98 fps, 1k tbn, 90k tbc (default)
    Metadata:
      creation_time   : 2015-04-27 09:38:46
    Stream #0:2(rus): Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, 164 kb/s
    Metadata:
      creation_time   : 2015-04-27 09:38:46
    Stream #0:3(rus): Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, 163 kb/s
    Metadata:
      creation_time   : 2015-04-27 09:38:46
    Stream #0:4: Video: mjpeg (MJPG / 0x47504A4D), yuvj444p, 2400x2400 [SAR 1:1 DAR 1:1], q=2-31, 1k tbn, 90k tbc
    Stream #0:5(rus): Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, 164 kb/s
    Metadata:
      creation_time   : 2015-04-27 09:42:16
    Stream #0:6(rus): Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, 164 kb/s
    Metadata:
      creation_time   : 2015-04-27 13:15:11
    Stream #0:7(rus): Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, 163 kb/s
    Metadata:
      creation_time   : 2015-04-27 13:15:54
    Stream #0:8(rus): Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, 164 kb/s
    Metadata:
      creation_time   : 2015-05-02 11:26:53
    Stream #0:9(rus): Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, 164 kb/s
    Metadata:
      creation_time   : 2015-05-02 11:27:38
    Stream #0:10(ukr): Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, 164 kb/s
    Metadata:
      creation_time   : 2015-05-02 11:28:28
    Stream #0:11(eng): Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, 164 kb/s
    Metadata:
      creation_time   : 2015-05-02 11:31:39
    Stream #0:12(rus): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:42:02
    Stream #0:13(rus): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:42:40
    Stream #0:14(rus): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:43:21
    Stream #0:15(rus): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:16(rus): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:17(rus): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:18(rus): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:19(ukr): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:20(eng): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), 640 kb/s
    Metadata:
      creation_time   : 2015-05-02 15:45:25
    Stream #0:21(rus): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s (default)
    Metadata:
      creation_time   : 2015-05-02 15:56:55
    Stream #0:22(eng): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s
    Metadata:
      creation_time   : 2015-05-02 16:01:22
    Stream #0:23(rus): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s
    Metadata:
      creation_time   : 2015-05-02 16:03:11
    Stream #0:24(rus): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s
    Metadata:
      creation_time   : 2015-05-02 16:03:38
    Stream #0:25(rus): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s
    Metadata:
      creation_time   : 2015-05-02 17:40:17
    Stream #0:26(eng): Subtitle: mov_text (tx3g / 0x67337874), 1280x108, 0 kb/s
    Metadata:
      creation_time   : 2015-05-02 17:40:17
    Stream #0:27(eng): Subtitle: mov_text (text / 0x74786574)
    Metadata:
      creation_time   : 2015-05-02 17:40:17
    Stream #0:28(eng): Video: mjpeg (jpeg / 0x6765706A), yuvj420p, 640x360 [SAR 1:1 DAR 16:9], q=2-31, 0 kb/s, 0k fps, 90k tbn, 1k tbc
    Metadata:
      creation_time   : 2015-05-02 17:40:25
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
  Stream #0:2 -> #0:2 (copy)
  Stream #0:3 -> #0:3 (copy)
  Stream #0:4 -> #0:4 (copy)
  Stream #0:5 -> #0:5 (copy)
  Stream #0:6 -> #0:6 (copy)
  Stream #0:7 -> #0:7 (copy)
  Stream #0:8 -> #0:8 (copy)
  Stream #0:9 -> #0:9 (copy)
  Stream #0:10 -> #0:10 (copy)
  Stream #0:11 -> #0:11 (copy)
  Stream #0:12 -> #0:12 (copy)
  Stream #0:13 -> #0:13 (copy)
  Stream #0:14 -> #0:14 (copy)
  Stream #0:15 -> #0:15 (copy)
  Stream #0:16 -> #0:16 (copy)
  Stream #0:17 -> #0:17 (copy)
  Stream #0:18 -> #0:18 (copy)
  Stream #0:19 -> #0:19 (copy)
  Stream #0:20 -> #0:20 (copy)
  Stream #0:21 -> #0:21 (copy)
  Stream #0:22 -> #0:22 (copy)
  Stream #0:23 -> #0:23 (copy)
  Stream #0:24 -> #0:24 (copy)
  Stream #0:25 -> #0:25 (copy)
  Stream #0:26 -> #0:26 (copy)
  Stream #0:27 -> #0:27 (copy)
  Stream #0:28 -> #0:28 (copy)
Could not write header for output file #0 (incorrect codec parameters ?): Error number -40 occurred
Conversion failed!

I guess the problem is with the subtitles since -sn seems to work but without copying the subtitles. How can I get around that.

[kieranjol]

It throws up this error [matroska @ 01fcb6a0] Subtitle codec 94213 is not supported.

It looks like your last subtitle stream is a different format to the others?
On a side note, did you intend to have three video streams with different codecs and pixel formats?

[hemstock]

Not really. I want to make them mkvs first so that I can use mkvmerge to choose the correct audio, video and subtitle streams.

[kieranjol]

Sounds like your ultimate goal is stream mapping? You can do that within ffmpeg.https://trac.ffmpeg.org/wiki/How%20to%20use%20-map%20option https://trac.ffmpeg.org/wiki/How%20to%20use%20-map%20option

[hemstock]

Ok so I will use -sn to copy the files using mapping without subtitles, then extract the subtitles to srt and finally mux together again. Thanks.

[ConverterCrazy]

Hello,

I have used helpful suggestions from this thread. But, I am facing a new problem.

I have a collection of VCDs -- 47 in all -- which have been played again and again over a period of past 4 years. Now all VCDs have scratches and five of them play with some 'kitchir-kitchir' audio when video shows distortion (blocks) scattered over the entire display.

I don't mind any of it as the rest of content is played without any error.
But, I certainly don't want to sacrifice my collection.

Thanks to @baldrick, I used his suggested tool VCDgear and recorded/ripped VCDs in 47 subfolders. Everything went fine except some error correction in 5 disks.

My knowledge of FFMpeg:
In the past, I used this command in a batch file to convert multiple MP4 files to MKV in the folder:

for %%F in (*.MP4) do "C:\7z\ffmpeg-20130813-git-bbbd959-win32-static\bin\ffmpeg.exe" -i "%%F" -vcodec copy -acodec copy "%%~dF%%~pF%%~nF.mkv"
pause

As I understand it, the above command simply changes the container and does not recode.
This is the end of my knowledge of ffmpeg.

Here is what I want to do - without much loss to audio/video quality (I know recoding means some loss):

1. Convert MPG to some format which can be played on any CD/VCD player (failing which on any computer at least).
2. Convert MP2 Stereo audio to MP3 at 192KB and lower volume by -9dB -- with slight bass-cut, if possible.

This is what I have:

1. Latest FFMpeg in C:\ffmpeg-20151108-git-a5202bc-win32-static folder
2. MPG files = 94 -- 2 in each of the 47 subfolders.
[ Main folder is D:\MB and subfolders are D:\MB\Disk01 (01)… D:\MB\Disk01 (47) ]

I can do all that to a few files from what I have learned in this Forum; but, doing that to so many files will wear me down and will take me one year or so.

Hope I get some suggestion as has been the case in the past.

Please suggest anything about conversion too if what I want is not the right approach.

Thanks.

[hemstock]

Try adding /r after "for" and placing the bat file in the root folder (D:\MB)

[Baldrick]

1. Convert MPG to some format which can be played on any CD/VCD player (failing which on any computer at least).

Have you tried just burn some mpg files on a CD and see if any vcd player supports them? And those mpgs should work on all computers/software video players.

[ConverterCrazy]

1. Convert MPG to some format which can be played on any CD/VCD player (failing which on any computer at least).

Have you tried just burn some mpg files on a CD and see if any vcd player supports them? And those mpgs should work on all computers/software video players.

Thanks @baldrick

Yes, they work -- tried it with one file. Each MPG file is nearly 500MB. I'd prefer back up on HDD. Burning 94 CDs is unthinkable.