"Playback Info"-Widget does not show full information about framerate.

[marissa999]

Describe The Bug
After digging into the code for some other reason (I considered adding the original framerate of the movie file to the widget) I realised, that getDisplayTranscodeFps is actually supposed to provide you a number of how many transcodings it could currently support (at least I think that is what the number is for). However I can not see that number in Jellyfin-Web (see last screenshot)

jellyfin-web/src/components/playerstats/playerstats.js

Lines 199 to 211 in 39ec804

	function getDisplayTranscodeFps(session, player) {
	const mediaSource = playbackManager.currentMediaSource(player) || {};
	const videoStream = (mediaSource.MediaStreams || []).find((s) => s.Type === 'Video') || {};
	const originalFramerate = videoStream.AverageFrameRate;
	const transcodeFramerate = session.TranscodingInfo.Framerate;
	if (!originalFramerate) {
	return `${transcodeFramerate} fps`;
	}
	return `${transcodeFramerate} fps (${(transcodeFramerate / originalFramerate).toFixed(2)}x)`;
	}

The "full" information about how much faster/how many transcodings the server could support is only returned, if originalFramerate is defined. I could not figure out looking at the code in both jellyfin-web and jellyfin-server how videoStream.AverageFrameRate is actually determined. (Idea: Maybe the jellyfin-server could always set the AverageFrameRate to the OriginalFrameRate if the AverageFrameRate can not be determined?)

It seems like a different part of the code of the webui uses stream.AverageFrameRate || stream.RealFrameRate for getting the FrameRate.

jellyfin-web/src/components/itemMediaInfo/itemMediaInfo.js

Lines 131 to 133 in 39ec804

	if ((stream.AverageFrameRate || stream.RealFrameRate) && stream.Type === 'Video') {
	attributes.push(createAttribute(globalize.translate('MediaInfoFramerate'), (stream.AverageFrameRate || stream.RealFrameRate)));
	}

Potential Fix

I would assume the code in the file playerstats.js L203 would have to be changed from

jellyfin-web/src/components/playerstats/playerstats.js

Line 203 in 39ec804

const originalFramerate = videoStream.AverageFrameRate;

to

    const originalFramerate = videoStream.AverageFrameRate || videoStream.RealFrameRate;

After changing this locally and rebuilding jellyfin-web, I was able to get the output to work as expected:

I made a PR, in case the change i suggest is correct: #6199

(I also believe that maybe it might be useful in general to add the framerate as its own line/information to

jellyfin-web/src/components/playerstats/playerstats.js

Line 223 in c4d0c42

function getMediaSourceStats(session, player) {

Steps To Reproduce

1. Go to a video file, and click "Media Info"
2. The Framerate appears, as expected
3. Start watching that video file
4. (Potentially) Change quality to force transcoding
5. Open the "Playback Info"-Widget
6. Transcoding Framerate does not show how many streams it could support

Expected Behavior
In Step 5 in Transcoding Framerate you should see something like 200 FPS (8.33)

Screenshots

System (please complete the following information):

• Platform: Linux
• Browser: Firefox
• Server version: 10.9.11
• Web version: 10.9.11
• Build version: Release