Avidemux x264 parameters via command line

[Minnac]

Dear friends,

Could someone tell me, in x264 config page, how to change Encoding Mode and/or quality value via command line.

Best Regards.

[Baldrick]

I'm moving you to our video conversion section.

Use "--video-conf cq=30" for constant rate factor 30

See http://www.avidemux.org/admWiki/doku.php?id=using:command_line_usage

[Minnac]

Thanks for your fast response. I think I need further help.
My line is this:

"C:\Program Files\Avidemux64\avidemux.exe" --load test.avi --audio-codec LAME --output-format MP4 --video-conf cq=30 --video-codec x264 --save test.mp4

It works but ignores "--video-conf cq=30" parameter. I tried to write several quality values, but it always uses default value.

I changed order of video parameters as:

"C:\Program Files\Avidemux64\avidemux.exe" --load test.avi --audio-codec LAME --output-format MP4 --video-codec x264 --video-conf cq=30 --save test.mp4

Again same result. Converts the video but ignores the quality parameter.

Do you have any comment on this issue?

Thanks

[Baldrick]

They might have change the paramater try run avidemux --help . I have never used the command line.

Or why not use ffmpeg instead?

Like avi to mp4 with x264 video and aac audio:

ffmpeg -i test.avi -c:v libx264 -preset slow -crf 30 -c:a libfdk_aac -b:a 128k output.mp4

See https://trac.ffmpeg.org/wiki/Encode/H.264

[Minnac]

I think, you are right about parameters change.
To give ffmpeg a try is looking a better solution.

I appreciate your recommendations, but if you find an answer to my previous question, could you please share it here?

Thanks for your help.

[Minnac]

Dear Baldrick,
I think my video processing knowledge is far low from being able to use ffmpeg.
I get this error code:

  libavutil      54. 18.100 / 54. 18.100
  libavcodec     56. 22.100 / 56. 22.100
  libavformat    56. 22.100 / 56. 22.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 11.100 /  5. 11.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Guessed Channel Layout for  Input Stream #0.1 : stereo
Input #0, avi, from 'test.avi':
  Duration: 00:00:02.13, start: 0.000000, bitrate: 17669 kb/s
    Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/
unknown), 640x480, 15382 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
    Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels,
 s16, 1411 kb/s
Unknown encoder 'libfdk_aac'

and I don't know what I should do.
Could you please guide me?

Thanks

[Baldrick]

Try instead another aac encoder like the -c:a libvo_aacenc

ffmpeg -i test.avi -c:v libx264 -preset slow -crf 30 -c:a libvo_aacenc -b:a 128k output.mp4

[Minnac]

This works without any error.

Thanks a lot.

[Minnac]

Dear Baldrick,
You made me a ffmpeg freak. Once I realised that ffmpeg is a very powerful tool but needs to be used from command line, I made a front-end for it. Now I use my program for all of my conversion needs. I gave a name Avidemux Automater since I started with Avidemux controlling aim. Then I converted it to ffmpeg front-end and I implemented all the parameters that I need for my conversion purposes. Now I'm happy with it. Thanks for your guidance.
Here is a screenshot:

[Baldrick]

Great!