digital blocking on video

[dhardjono]

i put up drone flying video with gopro 1080 60 p and i al ways get digital blocking
when the drone is low to the grass area i see digital block mess. i try every thing but still get them . i saw others who use mac and there video is pristine on you tube. is there some thing i can do. here is a sample link.https://www.youtube.com/watch?v=d_SL4wxFdqk

thanks

HERE example edit on mac to youtube it so clear https://www.youtube.com/watch?v=_7PfUK0vm94

[BernH]

Youtube re-compresses everything that goes up there. How is your video before sending it to youtube? What are the bitrates used by the drone camera and what bitrates are you exporting as?

To handle motion and framerates that high, you would need to keep your bitrates pretty high to preserve the detail, but since it all gets re-compressed by youtube, it will get degraded from your original.

Incidently, I do see block compression artifacts in the other link you posted also, just not as pronounced, so I wouldn't say it's a mac thing as you suggest, but probably a bitrate thing. They may even be uploading prores video so that it as has few artifacts as possible by the time it hits the youtube re-encoders.

[dhardjono]

Youtube re-compresses everything that goes up there. How is your video before sending it to youtube? What are the bitrates used by the drone camera and what bitrates are you exporting as?

To handle motion and framerates that high, you would need to keep your bitrates pretty high to preserve the detail, but since it all gets re-compressed by youtube, it will get degraded from your original.

Incidently, I do see block compression artifacts in the other link you posted also, just not as pronounced, so I wouldn't say it's a mac thing as you suggest, but probably a bitrate thing. They may even be uploading prores video so that it as has few artifacts as possible by the time it hits the youtube re-encoders.

video look great no blocking i try high bit rate still same how can i make it more like pro rez. what should i use to encode ?

[dhardjono]

Standard- compression over compression. If you can, rise bitrate for your main recording, but youtube will most likely break it anyway as it uses low bitrate. You video is also full of "crazy motion" :)

yes it is tried h.264 and other codec same result

[mark williams]

I can't help with this but I would like to commend you on your great flying skills.

[dhardjono]

I can't help with this but I would like to commend you on your great flying skills.

thanks mark it new thing drone racing lots of fun

[dhardjono]

If your master which you uploaded to youtube is good quality then there is nothing what you can do about final youtube versions. There is no control over it. Youtube is fairly low bitrate, so you will get macroblocking for difficult sources.

Vimeo should be better, specially PRO version.

i get the same result on vimeo but let me try hq

[BernH]

video look great no blocking i try high bit rate still same how can i make it more like pro rez. what should i use to encode ?

Youtube's re-compression is pretty low bitrate and there is nothing you can do to control it.

I just dowbloaded and saved the stream from your video and I am seeing it at 29.97fps, 3342 kb/s (3148 kb/s for the video component), 1280x720

That is pretty low bitrate for fast motion like your video. Also, if you uploaded a 60FPS file, something is not right, since the FPS of the downloaded stream is 29.97. The un-even math to get from 60FPS to 29.97FPS may also be contributing to your problem.

Here are youtubes recommendations. (you will note that the bitrates I saw in your stream are well below the youtube recommendations)

https://support.google.com/youtube/answer/1722171?hl=en

However, they do also support other formats like mov files, meg2 files, etc., they will just re-compress them.

I would suggest that you use a multipass X.264 encoder like handbrake if you are using a .264 variant. This should give the best .264 type of compression.

Also, you can upload files at higher bitrates than their recommendations to try to preserve quality. They will re-encode it down, but you will be starting at a high quality file.

[Seemedia]

Same here. Youtube massacring my blacks. Same as vimeo.

[dhardjono]

Youtube's re-compression is pretty low bitrate and there is nothing you can do to control it.

I just dowbloaded and saved the stream from your video and I am seeing it at 29.97fps, 3342 kb/s (3148 kb/s for the video component), 1280x720

That is pretty low bitrate for fast motion like your video. Also, if you uploaded a 60FPS file, something is not right, since the FPS of the downloaded stream is 29.97. The un-even math to get from 60FPS to 29.97FPS may also be contributing to your problem.

Here are youtubes recommendations. (you will note that the bitrates I saw in your stream are well below the youtube recommendations)

https://support.google.com/youtube/answer/1722171?hl=en

However, they do also support other formats like mov files, meg2 files, etc., they will just re-compress them.

I would suggest that you use a multipass X.264 encoder like handbrake if you are using a .264 variant. This should give the best .264 type of compression.

Also, you can upload files at higher bitrates than their recommendations to try to preserve quality. They will re-encode it down, but you will be starting at a high quality file.

Ok i will try it but i also try on adobe premiere yesterday with the preset youtube encoding here the result .https://www.youtube.com/watch?v=ky8VTNvSgSs