What Are Codecs and Digital Container Formats?
When using oCam normally, you do not need an in-depth understanding of codecs and digital container formats. However, if you want to use oCam's extended features or optimize your recording settings, it is useful to understand these two terms. Below is an easy explanation of codecs and digital container formats, focused on how they relate to oCam.
* What is a digital container format?
A digital container format refers to familiar file extensions such as AVI, MP4, MOV, and FLV. It is a meta file format that defines the structure for storing video, audio, and metadata (for example, subtitles and time information) together in a single file. Simply put, you can think of a container format as the framework of a file structure that determines how video and audio data are stored.
For more information, see Wikipedia:
https://en.wikipedia.org/wiki/Container_format
For example, if a file is an AVI file, the container format is AVI, and the video and audio data inside that file are stored according to the structure defined by AVI. A container format acts like a "container" that holds the data, while the actual method used to encode the data is determined by the codec.
* What is a codec?
A codec is hardware or software that performs encoding and decoding. It includes algorithms for compressing data, decompressing it, or converting it into another format. In oCam, codecs are used to convert screen video data into a video file and to generate audio data. The generated data is then saved according to the digital container format selected by the user.
For more information about codecs, see Wikipedia:
https://en.wikipedia.org/wiki/CodecSimply put, a codec is a tool that compresses and converts video or audio data so it can be stored or played back efficiently. Common codecs used in oCam include XVID, MPEG-1, MPEG-2, MPEG-4, and H.264, while common audio codecs include MP3 and PCM.
* Codecs and container formats in oCam
In oCam, a codec is used to encode video and audio data in order to convert screen recording data into a video file. This encoded data is then saved as a file in the digital container format selected by the user, such as AVI or MP4. For example:
- If the file extension is AVI, the container format is AVI, and the video data inside may be encoded with H.264 or MPEG-4. The audio data may be saved as MP3 or PCM.
- In the case of an MP4 file, the container format is MP4, and it may similarly contain video encoded with H.264 and audio encoded with MP3.
* Summary
In oCam, the digital container format is the framework that defines the file structure, such as AVI or MP4, while the codec is the method used to compress and convert the video and audio data inside it, such as H.264 or MP3. oCam's default settings are enough for high-quality recording, but depending on your specific purpose, such as optimizing file size or improving editing compatibility, adjusting the codec and container format can make your workflow more efficient. If needed, try selecting the codec and format you want in oCam's codec settings menu.
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What are the supported video codecs and container formats?
What are the supported video codecs and container formats?
You can check supported codecs immediately by clicking the Codec button in the main oCam window.

The default video codec is Open H.264 + AAC (.MP4).
In addition, MPEG-1, MPEG-2, MPEG-4, XVID, OpenDivX, Microsoft MPEG-4 Part 2, and Microsoft MPEG-4 Part 3 are also supported.
All of these codecs are saved in MP4 or AVI container formats.
oCam records using optimized codecs at installation time, and when these codecs are used, the recorded files can be played on almost all media players without installing additional codecs, unlike many other screen recording programs.
Usually, you may need to install codecs to play a recorded video, but with these codecs, most are supported by default.
This means that you can play oCam-recorded video files directly in Windows Media Player immediately after installing Windows without installing any additional software.
So there is no extra hassle of having to install extra codecs.
Also, MPEG-4, XVID, and OpenDivX are internally encoded with the MPEG-4 codec in oCam, with only the FourCC value changed for XVID and OpenDivX.
Additionally, supported container formats include FLV.
FLV stands for Flash Video and supports live streaming, so you can upload FLV files directly to places like a Zboard forum and preview them immediately on the web.
You can also use an FLV player. FLV is encoded with the MPEG-4 codec in oCam.
For Appleโs QuickTime format, MOV is a QuickTime-only format and uses the MPEG-4 codec.
Also, MPEG-2 Transport Stream has the .TS extension, and MPEG-PS has the .VOB extension; both use MPEG-2 as the codec.
If you choose GIF animation for creating animations, you can make a moving image.
Finally, all audio codecs used during video recording are saved as MP3.
Additionally, external codecs are supported; please refer to a separate post for details on external codecs.