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I want to edit together a bunch of audio into a video like a horrible frankenstein monster, but unfortunately I'm not quite sure how to even get started. Here are my materials: a) A video file in .mkv format b) A video file in .avi format c) An audio file in .mp3 format What I'd like to do is modify the audio track of the mkv file so that it uses some audio taken from the .avi and .mp3 files. This may involve some minor video editing of the .mkv file too (pausing/duplicating some frames of the video to extend them) to fit the audio better. I expect I'd need to: 1) Convert/extract the .mkv into an editable format 2) Extract the audio from the .avi file, and change it into the same type of audio as used by the .mkv 3) Edit the .mp3 to be the same type of audio as the .mkv 4) Edit the audio of the editable .mkv file (somehow), splicing in the audio I need 5) Edit the video of the editable .mkv file at some key points to make it fit the new audio track? So I guess my questions are: - Is there a good video editor that can be used to do the above without too much of learning curve? A sort of 'linear' editor would probably be easiest for me to get to grips with, but I really want my final file to retain the audio and video quality of the original mkv source as much as possible. - Is there a recommended audio converter that I can use to change one sound format (likely stereo only) to match the .mkv audio (which likely will be a 5.1 audio file)?
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# ¿ Dec 4, 2014 21:50 |
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# ¿ May 16, 2024 20:44 |
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Geemer posted:I'd suggest you take a peek in the Yeah, these are pretty useful. I'll see what I can do with MeGUI and AviSynth. Got a feeling it'll be a bit of a learning curve but there are a lot of guides linked there. Thanks a lot!
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# ¿ Dec 5, 2014 03:17 |
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CuddleChunks posted:Editing video can be pretty weird stuff. I found it handy to keep in mind that each video file you have is two parts under the hood - compressed video stream and a compressed audio stream. There are loads of different formats for the two different streams which can be a big pain in the rear end. I might well end up editing the audio separately, yes. Will be a bit of a struggle 'matching up' all the formats though. I don't have adobe premiere unfortunately so I'll have to make do with other options.
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# ¿ Dec 8, 2014 04:49 |
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Factory Factory posted:You might be interested in two pieces of free software (for personal use, at least): Lightworks and Blackmagic Fusion 7. Lightworks is a nonlinear editing suite for video (like Premiere), and Fusion is a compositing package like After Effects. Thanks for these. I think they might be almost a bit too powerful for what I'm planning on doing (I've found nonlinear editors really hard to wrap my head around) but if I get nowhere with AVISynth I'll look into these. I feel like I'm making some progress in understanding some of the basics now at least and feel I should have my various materials prepared soon. Is there anything in particular I need to look out for to prevent quality loss? I'd like my final file to look and sound as much as the current unedited 720p mkv file without ballooning the size. Soul Reaver fucked around with this message at 01:57 on Dec 10, 2014 |
# ¿ Dec 9, 2014 02:16 |
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Factory Factory posted:Work in as high resolution as possible for as long as possible. Pros will use lossless codecs the whole way through. If you can't do lossless, at least don't recompress over and over - always work from the original when possible. If you're editing audio, it's helpful to record in 24-bit/96 KHz, not because the quality is better in the finished product but because it's easier to edit and mess with volume and playback speed without sacrificing quality. Unfortunately the source files already have some compression, but I'll avoid re-saving anything but the final product in any compressed method.
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# ¿ Dec 10, 2014 01:56 |
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# ¿ May 16, 2024 20:44 |
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Geemer posted:If you're using AviSynth or basically any other NLE, you're only saving a list of edits until you do the final rendering. There will be no loss of quality. Just to update people: I ended up using AviDemux to extract the audio files from the video. The 6 channel audio was an ac3 format, the stereo (unfortunately) mp3. The audio is in FLAC. I'm using Audacity with the VI plugins now to 'upmix' the mp3 to match the ac3 in terms of the channels, dB levels etc. I'm saving these as Audacity Project files only and the only audio export I'll do is the final ac3 with all the bits spliced in, so there should hopefully be minimal loss in that respect. I'm not at the AVISynth stage yet, but all that I'll really need to do when I get to it is to remove the old ac3, add the new ac3, and then add a couple of frames to make the video synch with the audio. One thing I'm not sure I get yet: if I create an AVISynth script, can I run that script together with the video file to view a 'preview' of the final product without having to render it first? Or will every edit attempt require me to render the video to see the outcome if I use AviSynth?
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# ¿ Dec 10, 2014 22:26 |