However, you won’t see these options available in the AWS Elemental MediaConvert or the Adobe Media Encoder because they use different H.264 codecs. The x264 codec is famous for its presets ranging from Ultrafast to Placebo and you’ll see these in most encoders that use the x264 codec. For example, presets, which control a defined set of encoding parameters to trade-off encoding speed and quality, are different for all H.264 codecs. Some other encoding controls are specific to the different H.264 codec implementations. Profile and Level control the compatibility of the video file that you produce, so are critical parameters to understand. All H.264 encoders should allow you to set these parameters and you see Encoder Profile and Encoder Level on the very bottom of Figure 1. What’s important to know is that some H.264 encoding parameters, like Profile, Level, and Entropy Coding technique, are the same for all H.264. You see two H.264 codecs available in HandBrake, x264 and Nvidia NVEnc). Beyond these two, companies like MainConcept, Beamr, AWS Elemental, and many others have developed H.264 codecs. In Figure 1, you see two H.264 codecs, x264 and the Nvidia NVEnc codec which is accelerated by hardware in the NVIDIA graphics card. The most prominent H.264 codec is x264, which is the codec in popular open-source encoding tool FFmpeg, and many tools based upon FFmpeg, like HandBrake (Figure 1). H.264 defines a codec specification and there are multiple implementations, which means that there are many H.264 codecs, all of which create files that should play in all H.264 players. As with all lossy codecs, the lower the data rate the lower the quality, so the more you compress the file the worse it looks. H.264 is a “lossy codec,” which means that it throws information away during encoding, converting the pixel-related data into other data structures that it uses to reproduce the original frames as closely as possible. The names are interchangeable and refer to the same technology. Each group used a unique name MPEG called the standard Advanced Video Coding (AVC) while the ITU called it H.264. H.264 is a video compression standard set by two standard-setting organizations, the Moving Pictures Experts Group (MPEG) and the International Telecommunications Union (ITU).
#H.264 CODEC DECODER SOFTWARE#
In closing, DivX H.264 decoder is a handy little piece of software that you can easily use to get the best out of your video using the H.264 codec.
#H.264 CODEC DECODER TV#
The latter is something you can definitely use in case the video is in NTSC and your tv only supports PAL format. It enables you to select from ‘Original Trust Container’ and ‘Bitstream’, as well as force PAL and NTSC (default and widescreen). You click it once, and the values for brightness, contrast, and saturation are recalled to zero.Ī feature that DivX H.264 decoder brings and is very helpful is that it allows you to choose the pixel aspect ration. The slider buttons can be translated to both positive and negative values and in case you go a bit too far from the original and feel that the modifications ruin quality instead of enhancing it, there's always the ‘Default’ button. Using sliders, you can correct or enhance brightness, contrast, and saturation and since everything is done from the decoder window, it’s easy to obtain the modifications you want without too much hassle. With DivX H.264 decoder it’s possible to directly adjust some of the more standard properties of the video material. You can also activate deblocking and improve visual quality by smoothing sharpness on the edges, as well as use deinterlace. There is no particular interface to the decoder once it is installed but you do get a simple configuration window that offers you quick access to all its functions.ĭivX H.264 decoder allows you to toggle multithreading which means that you get a much better performance out of the video playback if you own a multi-core computer. It installs just like any other software following the classic wizard. DivX H.264 decoder is a lightweight codec that enables you to decode video files and enhance their quality.
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