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I'm trying to concat multiple videos with ffmpeg, im using a text file as input but im getting "Files.txt: Invalid data found when processing input".

My command:

ffmpeg -i Files.txt -filter_complex "[0:v]fps=25,format=yuv420p,setpts=PTS-STARTPTS[v0];[0:a]aformat=sample_rates=44100:channel_layouts=stereo,asetpts=PTS-STARTPTS[a0];[1:v]fps=25,format=yuv420p,setpts=PTS-STARTPTS[v1];[1:a]aformat=sample_rates=44100:channel_layouts=stereo,asetpts=PTS-STARTPTS[a1];[v0][a0][v1][a1]concat=n=2:v=1:a=1" -movflags +faststart output.mp4
My text file:
file '1.mp4'
file '2.mp4'
Only the concat demuxer accepts a text file list
Either use the concat demuxer:
ffmpeg -f concat -i input.txt output.mp4
Or list the inputs normally and use the concat filter:
ffmpeg -i 1.mp4 -i 2.mp4 -filter_complex "[0:v]fps=25,format=yuv420p,setpts=PTS-STARTPTS[v0];[0:a]aformat=sample_rates=44100:channel_layouts=stereo,asetpts=PTS-STARTPTS[a0];[1:v]fps=25,format=yuv420p,setpts=PTS-STARTPTS[v1];[1:a]aformat=sample_rates=44100:channel_layouts=stereo,asetpts=PTS-STARTPTS[a1];[v0][a0][v1][a1]concat=n=2:v=1:a=1" -movflags +faststart output.mp4
You can't use a text file listing inputs unless you use the concat demuxer as shown above, or if you use some capability in your shell to interpret the list as inputs. ffmpeg has no such feature.
                Im using filter complex for a reason, concat makes no sense for my usecase. The second option works but im trying to do it with a text file.
– GoekhanDev
                Feb 2, 2021 at 17:03
                @VRX This answer directly answers the question "Invalid data found when processing input", but it now seems the actual question is "how can I use a file list as input with ffmpeg (but not for concat demuxer)"?
– llogan
                Feb 2, 2021 at 17:11
                Not it's not answering the question since it's very obvious what im trying to do. Im using filter complex, because every video that Im trying to merge is not the same format. If I would've use "concat" the video output is corrupted. The solution that im looking for is avoid the issue I am getting. Not a diffrent way to use a text file as input since there is no other way.
– GoekhanDev
                Feb 2, 2021 at 17:35
                @VRX You can't use a text file as an input unless: A) you are using the concat demuxer, or B) you use some capability of your shell. It's not a feature in ffmpeg.
– llogan
                Feb 2, 2021 at 17:37
                @VRX ffmpeg -i 1.mp4 -i 2.mp4 -i 3.mp4 -filter_complex "[0:v]fps=25,format=yuv420p,setpts=PTS-STARTPTS[v0];[0:a]aformat=sample_rates=44100:channel_layouts=stereo,asetpts=PTS-STARTPTS[a0];[1:v]fps=25,format=yuv420p,setpts=PTS-STARTPTS[v1];[1:a]aformat=sample_rates=44100:channel_layouts=stereo,asetpts=PTS-STARTPTS[a1];[v0][a0][v1][a1][2:v][2:a]concat=n=3:v=1:a=1" -movflags +faststart output.mp4
– llogan
                Feb 3, 2021 at 1:36
                Im using filter complex because the videos don't have the same format. If I would use concat the video output would be corrupted.
– GoekhanDev
                Feb 2, 2021 at 17:36
        
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