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mov vs mp4 - does file extension matter?

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Hi,

 

When rendering files with the h264 codec, does it matter whether they are Quicktime files (mov extension) or mp4 files (mp4 extension)?  Will Watchout use its native multithreaded decoding methods in either case, or will this only be done if the extension is mp4?

 

thanks

 

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File extension doesn't matter. Note, however, that a MOV file may contain additional data/tracks that could interrfere with playback, while the MP4 standard is a more strict subset of the MOV file format, thereby avoiding any sich additional data. But in most cases when just exporting a MOV file, there will be no difference.

 

Mike

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Dear sir,

Hi i need to know what is the limit of a video content can be played by a control server? Can it play a pixel count of 8000x720? Without splitting the video.. to be brief if am doing a wide screen of 100x9 feet and the width pixels goes more than 8000 pixels, is it okay to make content in full size? or do we have to split it.. what is the limit of resolution in a video or jpeg a watchout production server can support?

 

Thanks and regards

Chris

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Hi Chris,

 

I don't believe Watchout has a limitation with regards to pixelcount. If you can encode it into a file format which is supported by WO, it will work. However, many file formats have their limitation.

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FYI, the maximum size that WATCHOUT can handle as a single video has been increased in version 6 to 8k (from previously 4k).

 

Mike

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Thanks Mike. Didn't know that. Can you elaborate on the subject? Does 8k mean it supports all resolutions gathered under 8K as found on wiki? Is it limited to the horizontal pixelcount or the combined pixelcount? (Did not find many formats that supported a res above 4000pix width but I have used 8000x1200 res under v5.5.2 last year).

 

Can you define which codecs and encoders support 8K res and its limitation in pixelcount (i.e times 8 as with MPEG2).

 

Thanks in advance for the insight.

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What I mean by 8k support is that the maximum size of any piece of media that's not a plain still image is now 8192 by 8192 pixels, up from 4096 x 4096 in previous version. That's of particular interest when texturing 3D objects, I would think, although it also may have implications on video playback, as it increases the maximum size of a single video. Codec support and hardware requirements to play such a large video is another issue, though. 

 

Mike

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File conversion doesn't matter but given that the incompatibility may occur sometime, some people will choose to convert MOV to MP4 with freeware like HandBrake and VideoSolo Free Video Converter.

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