Talk:Material Exchange Format

From Wikipedia, the free encyclopedia

	Film Portal This article is within the scope of WikiProject Films. This project is a central gathering of editors working to build comprehensive and detailed articles for film topics on Wikipedia. If you would like to participate, you can edit the article attached to this page, or visit the project page, where you can join the project and/or contribute to the discussion.
Start This article has been rated as Start-Class on the quality scale. ??? This article has not yet received a rating on the priority scale.
Editing Guidelines Please remember these guidelines when editing a film article: If a non-film article already exists with the name of the film that you are trying to create an article for, disambiguate and use (film) in the title: Film Title (film) For more information see: Wikipedia:Naming conventions (films) When writing an article about a particular film, the general format should be a concise lead section, followed by a plot summary of no more than 900 words, production details, a cast list, a reception section, and references. Create an Infobox that tells all pertinent information about the film.
Additional Information: This article has been checked against the following criteria for B-Class status: Referencing and citation: not checked Coverage and accuracy: not checked Structure: not checked Grammar: not checked Supporting materials: not checked To fill out this checklist, please add the following to the template call: <!-- 1. It is suitably referenced, and all major points are appropriately cited. --> |B-Class-1=yes/no <!-- 2. It reasonably covers the topic, and does not contain major omissions or inaccuracies. --> |B-Class-2=yes/no <!-- 3. It has a defined structure, including a lead section and one or more sections of content. --> |B-Class-3=yes/no <!-- 4. It is free from major grammatical errors. --> |B-Class-4=yes/no <!-- 5. It contains appropriate supporting materials, such as an infobox, images, or diagrams. --> |B-Class-5=yes/no Related task forces (general): Filmmaking task force

[edit] Conversion

I am very concerned about the text suggesting that MXF can be "converted into AVI". Many MXF files do not contain video (or even any linear media at all). Even then there are effectively as many video compression codecs in MXF files as there devices which create MXF files and no software can support arbitrary codecs. These are two good reasons why this line is NG, and I've nixed it. —Preceding unsigned comment added by 82.152.178.6 (talk) 15:54, 4 December 2007 (UTC)

[edit] Avid / Sony incompatibility

This is just something that bugs me, but Avid's implementation of MXF cannot be read in Sony Vegas.

[edit] MXF issues

It may be enlightening to add information on why there are several different flavours of MXF. If anyone has a copy of the SMPTE journal, the information should be there... i.e. I recall skimming over an article about MPEG2 essence in MXF. AFAIK, there are issues such as:

A- Audio interleaving.
B- MPEG2 indexing for fast random access. Important for real-time editing of HDV and XDCAM material (the XDCAM type that uses MPEG2 compression).
C- Performance issues. (My knowledge is vague here.)
D- Other reasons why there needs to be several flavours of MXF.

Glennchan 06:44, 7 October 2006 (UTC)

I'd say: MXF is a wide standard for the wrapping of a range of essence types with a range of metadata schemes for a range of use cases. This is why there are so many "flavors."

Gwsyzygy 17:28, 11 May 2007 (UTC)

I believe the references to "naming convention which relies on randomly generated filenames" are UMIDs, which are not ramdomly generated but are specially crafted filenames intended to be universally unique (UUID).