[FFmpeg-user] Generate MPEG Transport stream from audio files only

Pierre Pasquet pierrepsqt at icloud.com
Fri Mar 9 17:05:36 EET 2018


I have tried your solution and here’s what I get : Unable to find a suitable output format for 'color=s=:c=black:r='
color=s=:c=black:r=: Invalid argument

The full command was : ffmpeg -re -i test.aac color=s=$outFormat:c=black:r=$videoRate -vcodec copy -vbsf h264_mp4toannexb -acodec copy -f mpegts udp:// <udp://>



> On 9 Mar 2018, at 03:51, Carl Zwanzig <cpz at tuunq.com> wrote:
> On 3/8/2018 8:17 AM, Moritz Barsnick wrote:
>> As Carl Eugen tried to point out: What is missing is that you provide
>> your actual (non-working) command line and its complete, uncut console
>> output.
> One thing missing is some directed speculation even before the cmd line is sent; it's a valuable part of troubleshooting and helps those asking to learn.
> To the OP-
> You might try providing dummy video to go with the audio (I know some software doesn't deal well when there is no video stream).
> I think all you need to add something like
>  -i color=s=$outFormat:c=black:r=$videoRate
> but I haven't tried it.
> z!
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