Merge DASH streams

[David Banner]

I downloaded a video that has three files, video and audio and I am not sure what the last one is. How do I join the audio and video. the each play separately in VLC

As far as i can determine they are DASH streams. This is the media info.

AUDIO
______
General
Complete name : C:\Users\youtube-dl\myfilm.m4a
Format : iso6
Codec ID : iso6 (iso6/dash)
File size : 53.5 MiB
Duration : 58 min 49 s
Overall bit rate mode : Variable
Overall bit rate : 127 kb/s

Audio
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 58 min 49 s
Bit rate mode : Variable
Bit rate : 128 kb/s
Maximum bit rate : 133 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 spf)
Compression mode : Lossy
Stream size : 52.8 MiB (99%)
Language : English

__________________________________________________ ________________________

VIDEO
_______
General
Complete name : C:\Users\youtube-dl\MYFILM.mp4
Format : iso6
Codec ID : iso6 (iso6/dash)
File size : 648 MiB
Duration : 58 min 50 s
Overall bit rate : 1 540 kb/s

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc3
Codec ID/Info : Advanced Video Coding
Duration : 58 min 50 s
Bit rate : 1 536 kb/s
Maximum bit rate : 6 393 kb/s
Width : 704 pixels
Height : 396 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 50.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.110
Stream size : 646 MiB (100%)
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

__________________________________________________ _______

AND THIS
________
General
Complete name : C:\Users\youtube-dl\MYFILM.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/mp41)
File size : 28.0 Bytes

[fornit]

Usually that's easy. With ffmpeg:

ffmpeg -i MYFILM.mp4 -i myfilm.m4a -map 0:v:0 -map 1:a:0 -c:v copy -c:a copy -y myfilm-av.mp4

[David Banner]

Usually that's easy. With ffmpeg:

ffmpeg -i MYFILM.mp4 -i myfilm.m4a -map 0:v:0 -map 1:a:0 -c:v copy -c:a copy -y myfilm-av.mp4

Thanks for the help I figured ffmpeg would do it but did not know the code