Metaz audio metadata editor3/2/2023 ![]() ![]() I personally prefer to use a GUI app for pure convenience. That part is harder to figure out programmatically, and because that is harder to figure out, only few apps implement it. If copy fails, the GUI produces lots of textual output, or it produces only a few lines, that simply say “can’t convert”. It is rare to be found in GUI converters because FFmpeg is just a command-line utility. All converters can convert, but only a handful copy. Keeping these two basic commands in mind, we can look at GUI converters with a different eye. In this mode, FFmpeg tries to be somewhat intelligent and picks a conversion setting that emulates the original files’ encoding to produce the resulting format (but it does so at a variable bitrate).Ī qscale of 0 means the quality scaless 1:1 compared to the original file. In case neither streams can be used, or one fails to convert, you can try to “quality scale” to the resulting format. Therefore a fast drive is going to increase the operation. This means conversion speed is mainly determined by the speed at which your hard disk can read the data. It merely copies everything to a new format. It’s a fast conversion because FFmpeg doesn’t do any actual processing of the images. This is known in GUI converters as “fast conversion”, sometimes, or muxing. The commands are simply -vcodec copy and -acodec copy, resepectively. If any of the two fail, you can try to copy just one. codec copy tells FFmpeg to try to reuse the audio and video stream. I write attempt because if the resulting container can’t use any of the streams of the original file, even FFmpeg can’t write it with the previous command. Second, the extension of the written movie, mp4, determines the container format FFmpeg attempts to write to. There’s quite some information in this short command.įirst, there’s -i. To do this you can use the copy function.įfmpeg -i input.mkv -codec copy output.mp4 One of those formats is MPEG-4 Video and MPEG-4 Audio.įFmpeg is able to “convert” a video from one format to the other by basically unpacking what’s inside one of those containers, and wrapping it in another container. The beauty is that those container formats are somewhat interchangeable, because the formats the streams are in, are supported by multiple containers. AVI, QuickTime Movie (MOV), MPEG-4, Matroska Video (MKV). Makes sense, right?Ĭontainers, again, come in all sorts of flavours. If you want to be able to switch the audible language, for instance, a second audio stream has to be added. When you think of a movie container, it generally has two streams inside of it. It contains one or more streams of media. You can think of a container just as in the real world. ![]() When working with movie media we always have to deal with container formats. This is another thing to consider when choosing a converter app.īecause of these two reasons I’d like to start at the command-line level to show where GUIs fall short but also teach you some neat things it can do. That said, those GUIs might have a more or less complete implementation of the entire FFmpeg feature set. What you can buy and download from the App Stores are just GUI’s for FFmpeg. Don’t despair however, if you don’t know how to use the command-line, because media converters nowadays almost always use FFmpeg underneath. The approach to fix this issue is different.Ĭonverting Media into iTunes acceptable formatsĪs mentioned, FFmpeg is my favorite utility to use for format conversion. This is the same kind of problem users face when working with music. The data that is associated with movies and TV shows is sometimes missing, or simply wrong. ![]() The other big hurdle is, still, metadata. iTunes is a bigger hurdle in this case because the media we use comes in all sorts of formats. The server live-converts items, if necessary. Other depot systems, such as Plex, allow the user to keep videos in all sorts of formats, and the media server takes care of how the media is delivered, to the device a piece of media is playing on. When you are working with things like iTunes as your media depot, newer versions require you to have media in certain formats only. This command-line utility is so versatile that it can do so many things when it comes to media. In this post I’d like to teach you some of my personal favorite workflows in regards to personal home videos. ![]()
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