Concatenate .264 streams losslessly

[SameSelf]

I need some quick advice. I have a bunch of elementary .264 streams. What is the easiest way to go about concatenating these losslessly. I tend to prefer CLI over GUIs. So if there is a way to do this using ffmpeg or something similar that would be great.

[LigH.de]

It might be possible to concatenate them binary (copy /b). But better mutliplex them to MP4 and concatenate those in MP4Box, IMHO (doom9 thread).

No warranties.

It will be useful to have them encoded "--stitchable" in x264 (unfortunately this option may be partially undocumented, or not available in every build).

[SameSelf]

Thank you for the suggestion. Converting them to mp4 is not desired. I should have mentioned that these are bluray compliant encodes that I am using to author a bluray. So I need to produce an elementary .264 stream.

[LigH.de]

In this case, concatenate them logically, not physically. A Blu-ray authoring tool should be able to create playlists loading each of them in separate MTS files via generating MPLS playlists.

[SameSelf]

I wish it were that simple. But when generating playlists, the Next button does not work on the remote. Is this a defect in the authoring tool or a consistent feature of MPLS? Thanks.

[hello_hello]

If m2ts or ts or AVCHD or a complaint Bluray structuree is okay as the output, try TSMuxer.

[jagabo]

ffmpeg to concatenate multiple .h264 files, specified in a list file:

ffmpeg.exe -f concat -i files.txt -c copy output.h264

files.txt looks like:

file 'video1.h264'
file 'video2.h264'
file 'video3.h264'

https://trac.ffmpeg.org/wiki/Concatenate

[SameSelf]

ffmpeg to concatenate multiple .h264 files, specified in a list file:

ffmpeg.exe -f concat -i files.txt -c copy output.h264

files.txt looks like:

file 'video1.h264'
file 'video2.h264'
file 'video3.h264'

https://trac.ffmpeg.org/wiki/Concatenate

Thanks. I was under the impression that concatenating elementary .264 streams was not possible.

[jagabo]

I was under the impression that concatenating elementary .264 streams was not possible.

It worked with a few streams I tried it with. I imagine it might be a problem with streams with different properties or from different encoders.

[SameSelf]

I was under the impression that concatenating elementary .264 streams was not possible.

It worked with a few streams I tried it with. I imagine it might be a problem with streams with different properties or from different encoders.

Maybe this will work for me then. All these files were encoded exactly the same using x264 from a batch of intermediate AVIs I generated.