Created attachment 141435 [details] GVFS network speed chart SUMMARY KIO-FUSE will force video player to read the whole file, not stream it The webdav server is the same one ,below STEPS TO REPRODUCE 1. open a webdav:// server in dolphin 2. find a big video in it 3. open with a external video player like MPV/VLC OBSERVED RESULT When I use dolphin mount the webdav directory and open the Video (`kio-fuse`) inside dolphin,`kio` will make all video player (tested with `vlc/mpv`) try to download the whole file ,not stream it，the network speed chart looks like a wall https://invent.kde.org/system/kio-fuse/uploads/e273d4982b3ba32fd0a1b6508052cf1a/%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20210910133844.png I cd into the directory where the `kio` mounted webdav to （like `/run/user/1000/kio-fuse-AYWsZt/webdav/127.0.0.1:8888/`） the terminal is very jam and slow when `ls` Video play back is not work EXPECTED RESULT When I use nautilus (`GFVS`) to open (mount) the `webdav` directory and open the Video inside nautilus,all video player (tested with `vlc/mpv`) works well, the video was streamed very well and the network speed chart looks like `wave`s https://invent.kde.org/system/kio-fuse/uploads/373c6caeb4f6cba9bb3324e8b540850b/%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20210910140615.png I cd into the directory where the `GVFS` mounted webdav to （like `/run/user/1000/gvfs/dav:host=127.0.0.1,port=8888,ssl=false/`） the terminal is very easy and smooth when `ls` Video play back is working well This is the excepted SOFTWARE/OS VERSIONS Linux/KDE Plasma: Operating System: Manjaro Linux KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.85.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION ``` /usr/lib/kio-fuse -V KIO FUSE version 5.0.0 FUSE library version 3.10.4 using FUSE kernel interface version 7.31 fusermount3 version: 3.10.4 ```
Created attachment 141436 [details] KIO-FUSE network speed chart
The kioslave for webdav:// (http.so) does not implement random access, so kio-fuse has no choice but to download the file in a single chunk. It should start playing during the download already though, unless the video file isn't directly streamable and contains necessary data (like an index) at the end.
@Fabian Vogt It not start playing during the download ,as you said ,a video file often contains necessary data (like an index) at the end. It will make the video player to `JAM` and Keeps Not Responding
I have observed the same behavior with sftp and fish. For a few months, the entire file is downloaded first and then the video plays
(In reply to Jesus from comment #4) > I have observed the same behavior with sftp and fish. For a few months, the > entire file is downloaded first and then the video plays I also have this problem with sftp in SMPlayer, which did not exist a few months back. Now the player opens but can't even draw its interface before the entire file has been downloaded by kio
Fabian is correct, for WebDav unfortunately this is the expected behaviour until the HTTP slave implementation gains random access support. For the SFTP protocol, this is most likely that the file is opened by KIOExec, not KIO FUSE because of this regression tracked here: https://bugs.kde.org/show_bug.cgi?id=436553
any update on this issue?