Hello,
I’m curious why a Plex client/player that is set to “2 Mbps, 720p” always appears to transcode down to 480p resoltion (when transcoding is needed)? Shouldn’t the selection be labelled “2 Mbps, 480p” to be accurate, or is something else going on?
And so the mystery continues.
Looks like a round-up issue. Plex looks at a resolution, and if any one of the two dimensions is larger than is typical for that resolution, it displays it as the higher number. 650 is bigger than 640, so it is thus bigger than 640x480. Thus it is 720p?
That’s all I can think of.
I see what you are saying, however Plex is taking a 1080 vertical video and making it 480 vertical.
From what I can find online, “480p” can mean many different horizontal resolutions but always means 480 vertical:
Thus, it would seem that a label of “2 Mpbs, 480p” would be an accurate description of the transcoded video output and should be used.
I was going to reply last night but got side tracked.
I suspect width is a factor here in how plex reports the resolution. When I started ripping content I used vertical scaling scale=-2:720 or scale=-2:480 and plex ending up reporting some odd (at least odd to me) resolutions in their UI due to the width the video ended up at.
I then switched instead to horizontal scale=1280:-2 and plex always reports this as 720p. I see the width in your source is 1464 so I guess when this downscales plex reports it as 480p. That’s my guess anyhow and as always I’m open to correction on this.
Good input. So, I ran two more tests. One with a source file of 1440x1080 (4:3 ratio) and another with a source file of 1920x1080 (16:9 ratio). Neither of these tests resulted in a 720p stream.
Test #1:
Transcoded output is 640x480, resulting in resolution “480p,” which would fit the 480p definition perfectly.
Test #2:
The transcoded “Resolution” comes out as “SD” and the WxH are 720x404.
Going further, I took the same file using in Test #1 and reran at “3 Mpbs, 720p HD (Medium).”
This time it hits 720p. I’m not saying Plex should change how “2 Mbps, 720p” transcodes, but I think it should be re-labelled as “2 Mbps, 480p” to give a better description of the expected resulting stream.
I see the same thing …
reports as SD quality …
Not sure what is happening here. Could be a bug alright.
Right, this setting appears to never give you a 720p stream.
I have a user whose bandwidth limitations require them to use “2 Mbps, 720p” for all their streams. I have yet to see a single transcoded stream to that user output at 720p.
It might be a bug, but more likely a mislabeling.
This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.
