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It could be that the USB stick is just too slow as you've suspected.
Thanks, I've been on to Samsung and they also suggested a USB 3.0 stick, and a to do a soft reset of the TV.
Can someone suggest the best bit rate for HD TV, and also do I use a YouTube preset if not actually uploading to Youtube - or is there a better preset for HD TV viewing?
Can you please provide a screen shot of the Export Settings you are currently using? You mention trying bit rates of 180 and 320 and that is confusing because for an H.264 export, 1080p 29.97 might be 32 to 40Mbps tops. YouTube preset would be 16Mbps.
Are you starting with H.264 format and exporting an .mp4 file, or perhaps using some other format/codec?
Thanks Jeff, I'm not sure if this screenshot is clear enough. I think I got the bitrate settings, from a Youtube video which basically said "turn them up as high as they can go".
For the most recent export, made 10 minutes ago, I have used much lower setting of Target 15 and Maximum 30. I have to say I don't really understand bitrate settings and how to use them correctly.
The other main settings are H.264, 1080p and VBR 2 pass, exporting as an MP4 file. If I need to change anything or add anything, I'd welcome the advice.
Screen shot is perfect, click on it to see full-quality version.
Strange, when I had tried H.264 export here the max bitrate allowed was 50, but may depend on the preset you start with. Make sure you are not looking at the AUDIO bit rate of 320kbps.
Bit rate is basically how much bandwidth the file uses per second. Please keep in mind though that you can't make something look better than it did to start with! Meaning most video cameras using AVCHD recording for instance might use between 24mbps to 28mbps quality. If you edit that file in Premiere, and export at say 40 or 50mbps...the video is not going to look any better than it started out. So really, exporting at higher bit rates creates a larger file than the original, but without much if any benefit.
Maybe put the Target and Max numbers closer together to avoid huge spikes in data rate which could cause playback issues. Like 15 and 20 rather than 15-30.
As you say, I was probably looking at the audio bitrate! depending on which preset I use, the maximum video bitrate seems capped at around 62.5.
I'll export another version with closer bitrates as you suggest; 15 20.
Since your Sequence is using 23.976fps (24p) and export is 24p then I will assume your source video is also 24p is that correct? Not sure that all TV displays can display native 23.976 content - wonder if it would make any difference if exported as 29.97fps instead? Of course, see if simple bit rate changes fix the issue first, change frame rate as last resort.
Most of the video (13.5 minutes total) was shot on a Canon 5D III at 1920 / 24 / ALL-I. There are some drone sequences at 50fps in 4K.
I'll try the bitrate change and see how it looks and then change the fps, if it's still problematic.
If anyone is interested, a low res version of the video is here.