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FFMPEG Convert To mp4 – A Full Simple Guide To Convert Media Files by FFMPEG

FFMPEG Convert To mp4 – A Full Simple Guide To Convert Media Files by FFMPEG

FFmpeg is a great tool for quickly changing a Media file’s format or quality, extracting audio, creating GIFs, and more, Here is a full easy guide on how to convert videos by FFmpeg.

What is FFMPEG: FFmpeg is a free open source project that contains a large number of libraries and program packages for processing video, audio and other multimedia files and streams. It is based on the FFmpeg program itself, which is designed to process video and audio files based on the command line, and is widely used in transcoding formats, basic editing (cropping, trimming and merging), video scaling, video effects, and compliance with standards. (SMPTE, ITU).
FFmpeg includes libavcodec, an audio/video codec library used by many commercial and free software products, libavformat (Lavf), audio/video container multiplexing and demultiplexing library, and FFmpeg for transcoding multimedia files The main command-line program.FFMPEG Convert To mp4

FFmpegWell, there are many open-source tools available on the internet for editing, customizing media and converting it to the desired media. Similar tools like Audacity or Handbrake are good, but sometimes you just need to quickly switch files from one format to another format, there you will find FFmpeg is very good to convert media files to other formats.

FFmpeg is a collection of various elements that process multimedia files. It is often used behind the scenes in many other media projects. Despite its name, it has nothing to do with a group of experts on moving images or the various multimedia formats that it creates.

In this article, I will use FFmpeg through the FFmpeg command-line tool, which is only a small part of the FFmpeg project. It is available on many operating systems and is included by default on some operating systems. It can be downloaded from the FFmpeg website or most package managers. FFmpeg is a powerful tool that can accomplish almost anything you can imagine in a multimedia file. Here, here we are intending to using it to convert files step by step, so we will not delve into its full functionality. And before considering using FFmpeg, we first need to quickly understand the actual meaning of media files.

Basic concepts: FFMPEG Convert To mp4

When converting audio and video, most people are confused about the correct format and container choice. Fortunately, FFmpeg is very smart to use the default settings. Usually, it will automatically select the correct codec and container without any complicated configuration.

Media files That Can be Converted: | FFMPEG Convert To mp4|

At a very high level, the media file is split into a container and its stream. These streams include actual AV components, such as movie audio or video, and are encoded using specific media encoding or codecs. Each codec has its own attributes, advantages and disadvantages. For example, the FLAC codec is very suitable for providing high-quality, lossless sound, and Vorbis aims to compete with MP3 in file size to provide the best sound quality. This means that the FLAC file will be much larger than the Vorbis audio stream, but it should sound better. None of them is better than the other in nature, because everyone is trying to do different things.

A container is a packaging stream. It provides a single interface with which media players and tools can interact. Some containers are very advanced and allow any type of stream, including several streams of video and audio in one container. The stream in the container should not be just audio or video. Different containers allow you to use different streams, such as subtitles, chapter information, or other metadata. It all depends on the setting of the container to an acceptable range.

This is an abstract representation of media files that overlooks the many differences between containers. Many require specific streams and metadata or impose restrictions on permitted codecs or content. This explanation is enough for you to understand this article. To learn more, click on the link above.

Please note that encoding video and audio may take a long time. When using FFmpeg, you should be ready to adapt for some time.


Examples of Uses: | FFMPEG Convert To mp4

For example, you want to have an MP3 file to be converted into an OGG file>

ffmpeg -i inject.mp4 outcome.webm

Because WebM is a well-defined format, FFmpeg automatically knows what video and audio it can support and will convert the streams to be a valid WebM file.

ffmpeg -i inject.mp4 outcome.mkv

Depending on your container of choice, this won’t always work. For instance, containers like Matroska are designed to handle almost any stream you care to put in them, whether they’re valid or not. May result in a file with the same codecs as inject.mp4 had, which may or may not be what you want.

This also works with audio:

ffmpeg -i inject.mp3 outcome.ogg

This command takes an MP3 file named inject.mp3 and converts it to an OGG file called outcome.ogg. From the point of view of FFmpeg, this means converting MP3 audio streams to Vorbis audio streams and packing them into OGG containers. You do not need to specify the type of stream or container, because FFmpeg will solve this for you.

Selecting your codecs: | FFMPEG Convert To mp4 

So, what do you do when you want to use a container like Matroska (which can handle almost any stream), but at the same time affect the codec in the outcome? Rescue FFmpeg! You can use the -c flag to select the desired codec.
This flag allows you to set a different codec for each stream. For example, to set the audio stream to Vorbis, use the following command:

ffmpeg -i inject.mp3 -c:a libvorbis outcome.ogg

You can also perform the same operation to change the video and audio streams:

ffmpeg -i inject.mp4 -c:v vp9 -c:a libvorbis outcome.mkv

This will allow the Matroska container to have a VP9 video stream and a Vorbis audio stream, which basically coincides with the WebM that we did earlier.

The ffmpeg -codecs command will print every codec that FFmpeg knows about. The output of this command will vary depending on the version of FFmpeg installed.

Changing a single stream: | FFMPEG Convert To mp4

The files you have are often more correct than you want, only one stream is malformed. Recoding the correct stream may take a long time. FFmpeg can help in this situation:

ffmpeg -i inject.webm -c:v copy -c:a flac outcome.mkv

This command copies the video stream from inject.webm into outcome.mkv and encodes the Vorbis audio stream into a FLAC. The -c flag is really powerful.

Changing a container: | FFMPEG Convert To mp4

The previous example can be applied to audio and video streams, which allows you to convert from one container format to another without performing any other stream encoding:

ffmpeg -i inject.webm -c:av copy outcome.mkv

Influencing the quality: | FFMPEG Convert To mp4

Now that we have the codec descriptor, the following question appears: How to set the quality of each stream?

The easiest way is to change the data rate, which can lead to different quality. Human audio-visual capabilities are not as clear as we think. Sometimes a change in bit rate can have a huge impact on subjective quality. In other cases, this can do nothing but just resize the file. Sometimes it’s hard to try and hard to know what will happen.

To set the bit rate of each stream, use the -b flag, which works similar to the -c flag, except that you set the bit rate instead of the codec option.

For example, to change the bitrate of the media file, you can use like this:

ffmpeg -i inject.webm -c:a copy -c:v vp9 -b:v 1M outcome.mkv

This will copy the audio (-c:a copy) from inject.webm and convert the video to a VP9 codec (-c:v vp9) with a bit rate of 1M/s (-b:v), all bundled up in a Matroska container (outcome.mkv).

Another way we can impact quality is to adjust the frame rate of the video using the -r option:

ffmpeg -i inject.webm -c:a copy -c:v vp9 -r 30 outcome.mkv

This will create a new Matroska and set the frame rate of the copied audio and video streams to 30 frames per second without using the inject frame rate (-r 30).

You can also use FFmpeg to resize the video. The easiest way is to use a certain size video:

ffmpeg -i inject.mkv -c:a copy -s hd720 outcome.mkv

This modifies the video to 1280×720 in the outcome, but you can set the width and height manually if you want:

ffmpeg -i inject.mkv -c:a copy -s 1280x720 outcome.mkv

This will give exactly the same conclusion as the previous command. If you want to set a custom size to FFmpeg, remember that the width parameter (1280) is in front of the height (720).

Adjusting the frame rate and bit rate are two rough but effective methods that affect multimedia quality. If the quality of existing resources is already very low, setting a very high value will not improve their quality.

Changing these settings is most effective for quickly reducing high-quality streams to reduce file size. Resizing the video may not improve the quality, but it may make it more suitable for tablets than TVs. Resizing 640×480 video to 4K will not improve it.

Changing the quality of files is a very subjective issue, which means that there is no single method that can be used every time. The best way is to make some changes and see if it looks better or sounds better.

Modifying the streams: | FFMPEG Convert To mp4

Usually your file is almost perfect, you only need to trim a few parts. This can be made easier with a tool that shows what you changed, but if you know exactly where to crop, it is very easy to do in FFmpeg:

ffmpeg -i inject.mkv -c:av copy -ss 00:01:00 -t 10 outcome.mkv

This will copy the video and audio streams (-c: av copy), but crop the video. The -t option sets the cropping time to 10 seconds, and the -ss option sets the starting point of the video to the cropping time, in this case 1 minute (00:01:00). You can not only be accurate to hours, minutes and seconds, but also reduce to milliseconds when necessary.

Extracting the audio: | FFMPEG Convert To mp4

Sometimes you don’t care about the video, but just want the audio. Fortunately, this is very simple in FFmpeg with the -vn flag:

ffmpeg -i inject.mkv -vn audio_only.ogg

This command only extracts audio from the inject, encodes it to Vorbis, and stores it in audio_only.ogg. You now have an isolated audio stream. You can also use the -an and -sn flags to cut audio and subtitle streams in the same way.

Making a GIF out of it: | FFMPEG Convert To mp4

The recently animated GIF (with hard g, because I am not a monster) is back. I personally think that GIF is the worst format you can choose for a video. It has poor quality and compression size; it has very strict restrictions on color, frame rate and container metadata; and it does not support audio. However, it is very popular. So how to convert video clips to GIF animation?

If you want to make a video without sound, using the -an flag (similar to the operation above) is better than creating animated GIFs, but there are many places that support GIFs that do not support other video formats. For all of these:

ffmpeg -i inject.mkv outcome.gif

This command creates a GIF of the same size as the inject file. This is usually a bad idea because GIFs are not as compressed as other video formats (in my experience, GIFs are about eight times the size of the original video). Using the -s option to set the GIF to a smaller size can help, especially if the inject source is very large, such as high-definition video.

Other tools: | FFMPEG Convert To mp4

Although FFmpeg is an important tool for most AV tasks, it is not ideal for everything. There are several tools in FFmpeg that can make things easier.

Grabbing videos from YouTube: | FFMPEG Convert To mp4

You can easily upload some content to YouTube and lose the original video, but only keep the YouTube version. What is the easiest way to get a copy of a YouTube video?

Youtube-dl is a beautiful little tool that you can use to receive videos from YouTube and some other video streaming services. It is super easy to use:

youtube-dl https://YOUTUBE VIDEO LINK

This command downloads the video at the specified URL and save it to your drive.

Youtube-dl has several options for controlling the quality and format of the downloaded video, but it was easier for me to use the above command. It loads the highest quality audio and video into a file, and then uses FFmpeg to convert it to the desired format.

Read Also:

⭐  How To Edit Videos on IPhone Or IPad

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