Provide example writing to container

[AlexanderHarrison]

Hi, I'm having trouble figuring out all the settings I should send to the mp4 crate. Could you provide a small example on how to write encoded bytes to a container such as mp4?

For example, there was an issue on the inactive repo mentioning how you must trim the first 4 bytes off of the sps and pps fields when getting them from x264. I feel like an important detail such as that should be given an example. I also little understanding of the major_brand and minor version fields.

I would like to use higher-level apis and not deal with containers, but I only see the crate video-rs, which isn't too much less complicated and pulls in a bunch of unneeded dependencies. If there is another crate that can easily transform rgb bytes to video that would also be helpful.

Thanks!

[Stonks3141]

Unfortunately, in my experience, there simply are no good options when it comes to Rust APIs for video manipulation. If the overhead is acceptable for your use case, I would recommend creating images for each frame and shelling out to ffmpeg to produce a video. I wrote the bmff and mp4-stream crates a while ago, and while I'm not particularly proud of the APIs or code, they might be worth a try. I'm not very familiar with h264 internals like sps and pps, but if you'd like a copy of the (880 page) H.264 standard, I could send you that in private.