Question: Concat Protocol

[Spartan-Hex-Shadow]

Hi there,

Had a question. Is there a filter for using the Concat Protocol rather than the Concat Demuxer (which is what I think the current ConcatFilter class does)?

Looking at Concat Protocol here: https://trac.ffmpeg.org/wiki/Concatenate

[tqk2811]

Not support and i not recommend use CP (concat protocol)

You can add as multi inputs and concat in filters.

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If you still want CP, try this
new VideoFileInput("concat:file1|file2")

[tqk2811]

oh i was write it here, you can custom yourself for video

FFmpegArgs/FFmpegArgs.Inputs/ImageFilesConcatInput.cs

Line 15 in 2d8245b

public static ImageFilesConcatInput ConcatProtocol(IEnumerable<string> files)

[Spartan-Hex-Shadow]

oh i was write it here, you can custom yourself for video

FFmpegArgs/FFmpegArgs.Inputs/ImageFilesConcatInput.cs

Line 15 in 2d8245b

public static ImageFilesConcatInput ConcatProtocol(IEnumerable<string> files)

Does the Concat Protocol allow us to do this? From https://trac.ffmpeg.org/wiki/Concatenate

" using intermediate files
If you have MP4 files, these could be loss lessly concatenated by first transcoding them to MPEG-2 transport streams. With H.264 video and AAC audio, the following can be used:

ffmpeg -i input1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
ffmpeg -i input2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
ffmpeg -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc output.mp4 "

[tqk2811]

Yes, but I don't recommend it.

[Spartan-Hex-Shadow]

Yes, but I don't recommend it.

Alright. But just for our own sake, if we had to do it, how would we go about doing it with the ConcatProtocol method?

[tqk2811]

VideoFilesConcatInput.ConcatProtocol( filesList );

[Spartan-Hex-Shadow]

VideoFilesConcatInput.ConcatProtocol( filesList );

Awesome. This method uses temporary streams for the inputs and then concatenates those?

[tqk2811]

VideoFilesConcatInput.ConcatProtocol( filesList );

Awesome. This method uses temporary streams for the inputs and then concatenates those?

It same as -i "concat:intermediate1.ts|intermediate2.ts"