Response to Sony Movie Studio specific. At this current time and with a lot of digging, I didn’t find any specific fixes for your Sony Movie Studio Platinum MP4 problem. It appears that Sony Movie Studio became Vegas Movie Studio software, which then was purchased by MAGIX May 20, 2016. Needless to say, there is a ton of old information on line which didn’t help. The new SMS version is Vegas Movie Studio 15 and it’s no longer free. How that might influence your current problem, I’m not sure. The audio input specifications for the new Vegas Movie Studio 15 is as follows: (MP4 is not on the list for audio)
Video: HEVC (only Platinum and Suite), AVC/AAC, AVI, MPEG-1, MPEG-2, MPEG-4, WMV
Audio: AAC, AA3, AIFF, FLAC, MP3, OGG, PCA, SND, W64, WAV, WMA
Picture: GIF, JPEG, PNG, WDP, BMP
Other: CDA, SFA
Thoughts, have you tried to update your current software? If you were having success with the software, and it has just started freezing, the program might have become corrupted (for a reason you might never know.) Are you able to reinstall your current software? Another thought, have you checked your MP4 file(s) to make sure they have not become corrupted, and/or have you tried any other supported video/audio files? While other members work on a fix for your MP4 problem in general, MAGIX does have a community forum for its products: https://www.vegascreativesoftware.info/us/
Sony press release about MAGIX (Scroll down a bit): https://www.sonycreativesoftware.com/news/pressreleases/2016/sony-creative-software-sell-products-to-magix
One another website source to read where VLC & MP4 is discussed (I can't vouch for their information): https://www.yodot.com/mov-repair/fix-mp4-files-not-playing-windows-10.html
Good luck anobile1
Self edit to remove bold typeface.
Edited by softeyes, 11 June 2018 - 10:02 PM.