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" formats employing data reduction based on perceptual coding (“lossy codecs”) must not be used. In the IASA guidelines for preserving audio (TC-03), chapter 11 (p.8), it says quite clearly: The technical guidelines by IASA, for archiving video (TC-06), are still work in progress, but Unless this is already the format the original source was in. MPEG-4 (Part 10): Better known as "H.264" or "AVC".Īll of the aforementioned video codecs are lossy and should not be used for archiving,.MPEG-4 (Part 2): Better known as "DivX/XviD".MPEG-2: this is the format used for DVDs.Market, which are used by some to store their videos in: Sometimes overlooking that the latter's purpose focuses on the needs of production rather than longtermĮxtending the above list, here are additional formats, usually more common on the consumer Maybe because many archives follow the example of large and well-known broadcasting archives – Motion JPEG2000-lossy (used currently for most Digital Cinema Packages (DCP))Įven for archiving, it's currently still common to see people using lossy video compression.
#Video codec comparison professional
The majority of video codecs currently in use, perform aĬurrently, this is even the normal case for professional video production, broadcasting,Įxamples of lossy compression used for professional production are: Therefore, you will hardly find uncompressed video in the wild, except for temporary editing use cases.Īlready use some form of compression before saving their data. Since these values are already uncomfortable (even for 422-subsampled PAL), imagine HD and beyond.
![video codec comparison video codec comparison](https://www.compression.ru/video/codec_comparison/h264_2010/figures/conclusion_hdtv.png)
So you would fit no more than 4 minutes of video on a whole 4.7 GiB DVD. Stored as YUV422 with 8-bits per component (=16-bits per pixel) and a resolution of 720x576Īpplying no compression at all ( =uncompressed) results in:ħ20 x 576 x 20 bits x 25 frames ≥ 1.448 GiB/Minute Take PAL-SD material (only image, no audio), Shows that even well-known vendors in the video domain sometimes unfortunately may communicateĪrchivists might want to keep this in mind when evaluating which products or solutions to useĭigital video produces vast amounts of data. They also showed an image suggesting uncompressed as opposite of subsampling.Įven though, Blackmagic could be considered to be addressing only semi-pro users, it still They were talking about "unrivaled video quality", but wrongly equating The naming and properties of artefacts introduced by storing video in digtial form.Īs one example, on the product site of Blackmagic's Decklink video cards Lossy vs lossless vs uncompressed? Fear, Uncertainty and Doubt (FUD)įirst of all, I'd like to note that there is currently some confusion in the video domain, regarding Some are more widespread and well known as others, others are less common or can even be There are many video codecs existing and in use in the real world.