[FFmpeg-user] Copy Audio

Chris c319chris at aol.com
Wed Dec 19 06:21:33 EET 2018

The original audio is:

ID                                       : 2
Format                                   : PCM
Format settings                          : Big / Signed
Codec ID                                 : twos
Duration                                 : 1 min 42 s
Bit rate mode                            : Constant
Bit rate                                 : 1 536 kb/s
Channel(s)                               : 2 channels
Sampling rate                            : 48.0 kHz
Bit depth                                : 16 bits

>>This is writing invalid files. mp4 does not allow pcm_s16be.

That is the audio ffmpeg is being told to copy. In v 4.0 it successfully copies the audio which can then be played back.

In v 4.1 it does not copy the audio but rather throws errors.

-----Original Message-----
From: Paul B Mahol <onemda at gmail.com>
To: FFmpeg user questions <ffmpeg-user at ffmpeg.org>
Sent: Tue, Dec 18, 2018 11:49 am
Subject: Re: [FFmpeg-user] Copy Audio

On 12/18/18, Chris <c319chris-at-aol.com at ffmpeg.org> wrote:
>> Can you post the complete terminal output and command line of what you see
>> when you run the process with 4.0?
> Command line:
> ffmpeg -y -i "D:\Videos\Trains\December_6_2018_San_Jose\C0073.MP4"  -crf 1
> -c:v libx264  -pix_fmt yuv420p  -s 1280x720  -r 59.94  -vf
> eq=gamma=0.83,lutyuv=y='clip(val,26,220)'  -c:a copy  processed.mp4

This is writing invalid files. mp4 does not allow pcm_s16be.

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