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Re: Merge Audio and Video Files
Posted: Thu Sep 12, 2019 1:23 pm
by abul
actually tried to output it in a different format and seems that i cannot as its unwrapping the content and giving m2v
Re: Merge Audio and Video Files
Posted: Thu Sep 12, 2019 1:27 pm
by emcodem
There is a typo in the command that momocampo posted, here is the correct one:
ffmpeg -i video.m2v -i audio.wav -map 0:0 -map 1:0 output.mxf
Re: Merge Audio and Video Files
Posted: Thu Sep 12, 2019 1:34 pm
by abul
ah okay this worked but it does seem that i has reduced the quality alot
Re: Merge Audio and Video Files
Posted: Thu Sep 12, 2019 1:41 pm
by emcodem
I hand over to @momocampo again but here is how you can keep the quality:
ffmpeg -i video.m2v -i audio.wav -map 0:0 -map 1:0 -codec copy output.mxf
Re: Merge Audio and Video Files
Posted: Thu Sep 12, 2019 1:55 pm
by abul
Know why im getting this error
[mxf @ 00000262b9979400] could not get mpeg2 profile and level
av_interleaved_write_frame(): Operation not permitted
Re: Merge Audio and Video Files
Posted: Thu Sep 12, 2019 2:18 pm
by momocampo
Ok first let's talk.
Your m2v file seems to be SD format. What do you want in the end ? SD or HD ? MXF but what codec inside?
If you want SD, I think you can encode you m2v to D-10 end merge it with audio (It works I tried).
If you want something else, tell me.
Re: Merge Audio and Video Files
Posted: Thu Sep 12, 2019 2:23 pm
by abul
File extension
.MXF
Container
MXF OP1a
Video Codec
MPEG2
Video Bitrate
50 Mbps
Profile
4:2:2
Resolution
1920x1080
Standard
PAL
Field Order
Interlaced, Top Field First
Frame Rate
25.00 fps
Audio Codec
BWF Audio
Audio Channels
2
Audio Sample Rate
48kHz
Aspect Ratio
16:9
This is what the specification given by the lecturer says
They gave a folder full of video files and audio
Re: Merge Audio and Video Files
Posted: Thu Sep 12, 2019 2:29 pm
by momocampo
Ok so you want to change M2v which is 720x576 SD format to XDCAM HD 1920x1080.
So you have just to insert a encoder node (xdcam Hd 422) between the monitor folder for video file and first delivery file.
The video m2v will be encode in XDCAM then merge with audio to out in mxf
EDIT: Ok it works. You have to check to accept only *.m2v in video file monitor folder.
Summary :
Take audio file, rename it "audio.wav" and delivery in folder Merge/
Take video file, rename it "video.m2v" and delivery in folder Merge/Encode it XDCAM HD/ take it and merge with "audio.wav"/ deliver %original_name% (so name of video file) .mxf
Re: Merge Audio and Video Files
Posted: Thu Sep 12, 2019 3:00 pm
by abul
Ah yes thank you it has worked.
My question now is that:
If i have 2 video file and 2 audio file, how will it know which audio file belongs to which video. both audio and video names are similar it starts of with category like food
followed by show or movie
followed by a string thats there on all video file P2High
followed by random numbers
EXAMPLE:
food_show_johnsCooking_P2High00c450277201909032309330843.wav
food_show_johnsCooking_P2Highc450277201909032309330827.m2v
and what would happen if there is 2 audio file left and right audio.
sorry i know i am asking alot but i've never used ffmpeg or FFAstrans or given any advice and told us to use this.
Re: Merge Audio and Video Files
Posted: Thu Sep 12, 2019 5:59 pm
by emcodem
Pleas describe much more what you want to do. I mean you say you habe 2 videos and 2 audios in a single folder but you only give examles for 1 video and 1 audio.
Finding the wav to the m2v is not a matter of ffmpeg or ffastrans, you would face the same problem using any other transcoder. Ffastrans allows you to do anything you like basically, you just need to get out what you like to do
So please give an exakt description of how you want to work: do you have thousans of files already in a folder or do you plan to have a watchfolder where new pairs of files ate dropped every day?
How does one folder containing m2v and wav exactly look like, how many files are there, whats the filenames, whats the video and audio format, is it alwas exactly the same?