Improve playback image quality
The image quality of the video on Twitch's site often comes nowhere near the image quality of the video I uploaded. This is especially noticeable in scenes with fast motion. For comparison:
File uploaded: https://pbs.twimg.com/media/CtwD9yBVMAAARPd.jpg
Twitch playback: https://pbs.twimg.com/media/CtwD_euUMAAdEZ5.jpg
Thanks for the feedback! We are constantly working to improve this and you should see these improvements going forward
Michel Houng commented
Catherine, I think the main issue is how the encoder is set up. Variable bitrate with multipass shoud reduce that kind of issue but it also requires much more time to encode or more processing power. Youtube don't do multipass i think. Maybe Twitch can try that setting to see if it improves the quality. In the end, i think most twitchers wouldn't mind more encoding time if the image quality is top notch as a result :)
Some game genres are more subject to get that issue (FPS, racing games). In short, anything that is really fast motion where one frame is quite different from the previous and next ones.
Hi Craig, and others on this thread, can you please point me to your problematic VODs (URL)?
Fabiano Bandeira (Amanrj) commented
I tested the service Twitch Upload and noticed it too.
Monado Wielder commented
I tested the Twitch Upload service and noticed this too. YouTube does the same thing, but to a lesser degree. The reason for quality loss is a dramatic drop in the bitrate. Currently, YouTube renders most 1080p 60 fps videos at 12 Mbps (8 Mbps for 30 fps), while Twitch uploads seems to have a flat 10 Mbps bitrate for all videos. If you're original bitrate is higher than than a site's max, it will be lowered and thus quality will be lost.
Josh Hatchett commented
Weird...My Podcast feels as good quality as the actual video: