Problem with an audio file already decrypted

[n1tr099]

hi guys i have a problem with an already decrypted audio file. If I just play the audio it works perfect but if I put it in a mkv container and then play it back it doesn't work. Inside mkvtoolnix, the file appears encrypted although it can be played without problems. Appears with codec 0x656e6361 "enca" Thanks in advance!

[[ss]vegeta]

Instead of mkvtoolnix try ffmpeg

ffmpeg -i vid.mp4 -i aud.mp4 -c copy video.mp4

[n1tr099]

Instead of mkvtoolnix try ffmpeg

ffmpeg -i vid.mp4 -i aud.mp4 -c copy video.mp4

thank you very much it worked perfectly

[notaghost]

Try this command too if you do not want to re encode
ffmpeg -i audio.mp4 -i video.mp4 -y -acodec copy -vcodec copy output.mp4

[[ss]vegeta]

Try this command too if you do not want to re encode
ffmpeg -i audio.mp4 -i video.mp4 -y -acodec copy -vcodec copy output.mp4

My command too doesn't re-encode.
"-c copy" is like -acodec and -vcodec combined.
I think.

[codehound]

Sort yourself out lads, ffs...
[Attachment 60813 - Click to enlarge]

ffmpeg -i audio.mp4 -i video.mp4 -c copy output.mp4