I have some .mp4 videos that are using Google’s VP9 codec for video. RV only plays about 1 in every 30 frames. I suspect it is playing every key frame and failing to update the in-between frames. VLC plays the media fine so I know the frames are in there…
Is there anything I can change in RV to get it to play correctly? Is there a setting that I need our engineers to change when they create these movies? I don’t want to transcode all of them but doing so with ffmpeg is one option I’ve found to get them to play.
Unfortunately we don’t officially support VP9 playback in RV. I’ll put in a feature request to our product managers to support it.
If you are willing to take legal responsibility for acquiring a license yourself, then you can follow the directions in the src/mio_ffmpeg/README file included in your RV install to re-compile the ffmpeg-based plugin with support for that codec enabled.
Please note that mio_ffmpeg wasn’t working starting with RV 7.5.x and we’ve just fixed it in 7.7.1. If you’d like to have a beta version of 7.7.1 before it’s released, please let me know.