H.264 is by far the most popular format for encoding videos. Yes, there are also multiple names for the same thing. H.264 (MPEG-4 Part 10 AVC) – This is also officially known as MPEG-4 Part 10, but H.264 is what you commonly hear. So what are some popular codecs? Popular Codecs There are different types of compression, which translates into different types of codecs. That’s where compressions comes into play. You would need your own data center to store all your family videos if everything was recorded in that format. So why do we even need all this compression and decompression? Well like I mentioned above, a RAW uncompressed 1080p file is almost a whopping 500GB for just one hour. I’ll explain more about encoders in the Popular Codecs section below. Hence, there can be many encoders for one codec. Check out this page, but don’t read too much or your head will hurt:īecause it’s a specification, there can me many ways to convert data into that format. For example, it can specify the width, height, aspect ratio, etc. Each codec has a specific set of guidelines. What is a bitstream? To not get very technical, it’s how the sequence of bytes should be arranged for that particular codec. The important thing to understand is that a codec is kind of like a specification of how the bitstream should look. I’ll tell you what transcoding is a little bit later on, let’s not confuse ourselves this early on. So that is exactly what a codec does: it takes a digital file and compresses it (or encodes it) for storage and decompresses it (or decodes it) for viewing or transcoding. So what exactly is a codec and what does it do? In the most simple terms possible, a codec is an encoder/decoder or, in it’s original form, a compressor (co) – decompressor (dec).
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