OK, we just got a Nexus 6 and confirmed that it doesn't have this problem, i.e. it adapts up/down based on the network speed. This N6 is running 5.0.1.
On Thursday, July 16, 2015 at 8:41:54 AM UTC-7, Glenn Kasten wrote: > > Do you have test results for any Nexus family devices (e.g. 5, 6, 7, 10, > etc.)? > Those are the reference devices used during release testing, so it will be > helpful to know how they behave. > Please also include the exact OS version for each Nexus device. > > On Thursday, July 16, 2015 at 6:54:29 AM UTC-7, William Chow wrote: >> >> Hi, >> >> Not sure if this is the right forum but came here first since it is >> affecting development of a new device. Please let me know if there is a >> better forum for this. >> >> I'm looking into a problem for an OEM regarding a new device in >> development, where YouTube does not adaptively adjust the video quality >> based upon the actual network speed. Instead, it always picks a specific >> resolution to play based on the network type: >> >> 1. 3G: 360p >> 2. 4G: max device resolution >> 3. WiFi: max device resolution >> >> The problem is that on WiFi or LTE, it does not adjust the quality down >> when the network is too slow for the device's max resolution (typically >> 720p or higher), and winds up stalling/buffering because it's forcing 720p. >> Conversely, if I have a fast 3G connection, it won't adjust the quality up >> above 360p even when the network can deliver 480p or higher. YouTube will >> stick to that quality even when I set quality to "Auto". >> >> I analyzed a variety of other devices and found some devices have this >> problem, while most do not: >> >> - Devices that also have this problem (quality is fixed, selected >> based on network type) >> - Samsung Tab 4 (SM-T237P) >> - Xolo Omega 5 >> - Star Up Vision >> - Devices that don't have this problem (quality is adaptive, adjusts >> based on actual network speed) >> - Samsung: S4, S5, S6, Note4 >> - LG: G2, G3, G4 >> - Panasonic P55 >> - Cherry: Flare, Topaz >> - Sony: Xperia Z3 >> >> One other thing we noticed on some devices with this problem is that in >> the YouTube "stats for nerds", the "Bandwidth" value is stuck on 0 KiB/s >> (mini graph is empty). This was true for the Star and Xolo devices >> mentioned above, although the Tab 4 was showing a valid bandwidth value, so >> not sure if this is relevant/related to the issue. >> >> Is there a system property or other setting that needs to be set/cleared >> to allow YouTube to automatically adjust quality based on actual network >> speed? >> >> --Bill >> > -- -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting --- You received this message because you are subscribed to the Google Groups "android-porting" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
