TinyCircuits Forum

TinyCircuits Products => TinyTV & Tiny Video Player => Topic started by: Dominicus on March 26, 2024, 04:32:44 AM

Title: HiRes video converted to TinyTV has +60% file size
Post by: Dominicus on March 26, 2024, 04:32:44 AM

I used Converter application on a 720p .mp4 video 450MB.  The resulting file had the low resolution, but the file size went up by 60% to 720MB.  What?

Title: Re: HiRes video converted to TinyTV has +60% file size
Post by: Ben Rose on March 27, 2024, 05:22:41 PM

Hi- yes, it's counterintuitive but the file size can increase due to the encoding used within the AVI file. TinyTV uses a very low power microcontroller so the AVI contains a MJPEG video stream and uncompressed audio which is all it can handle. The compression ratio is low compared to H264 that might be in a MP4 file, but that's how we're able to achieve the video playback on a device this size/cost.

Thanks,
Ben

Title: Re: HiRes video converted to TinyTV has +60% file size
Post by: Dominicus on April 01, 2024, 07:37:07 PM

Thanks for sharing the technical details. After reading up on MJPEG all makes sense.