I am struggling on a ffmpeg media conversion script.
I am using fluent-ffmpeg library with node.js.
My app is supposed to receive a stream as input, resize it using ffmpeg, and then outputing a stream.
However, I am absolutely unable to process an input stream with ffmpeg, even when specifying the input format (-f ffmpeg's option).
However, when execuyting the exact same ffmpeg command on an mp4 file (without extension), it works and converts properly the media !
Working code (no stream)
import * as ffmpeg from 'fluent-ffmpeg';
ffmpeg('myMp4File')
.inputFormat('mp4')
.audioCodec('aac')
.videoCodec('libx264')
.format('avi')
.size('960x540')
.save('mySmallAviFile');
Failing code (using stream)
import * as ffmpeg from 'fluent-ffmpeg';
import { createReadStream } from 'fs';
ffmpeg(createReadStream('myMp4File'))
.inputFormat('mp4')
.audioCodec('aac')
.videoCodec('libx264')
.format('avi')
.size('960x540')
.save('mySmallAviFile');
It generates the following ffmpeg's error:
Error: ffmpeg exited with code 1: pipe:0: Invalid data found when processing input
Cannot determine format of input stream 0:0 after EOF
Error marking filters as finished
Conversion failed!
This error explicitely says that ffmpeg could not identify the input format, in despite of argument -f mp4.
I read pages and pages of ffmpeg's man but I could find any relevant information concerining my issue.
Complementary information
Here is the output of command._getArguments(), showing the full ffmpeg command baked by the library:
[
'-f', 'mp4',
'-i', 'pipe:0',
'-y', '-acodec',
'aac', '-vcodec',
'libx264', '-filter:v',
'scale=w=960:h=540', '-f',
'avi', 'mySmallAviFile'
]
So the full ffmpeg command is the following:
ffmpeg -f mp4 -i pipe:0 -y -acodec 'aac' -vcodec 'libx264 -filter:v 'scale=w=960:h=540' -f 'avi' mySmallAviFile
