GNOME Bugzilla – Bug 347838
video recorded is only a couple frames long
Last modified: 2018-07-02 10:50:35 UTC
Please describe the problem: when i record a screencast the program functions just fine and allows me to save an ogg file. but when i go to play it back the entire thing consists of only a couple frames and is less than a second long. Steps to reproduce: 1. install normally 2. had to move libistximagesrc.so* files to /usr/lib/gstreamer-0.10/ to make it work 3. record screencast normally 4. playback screencast Actual results: the program seems to function just fine but the output is useless Expected results: the ogg file to contain a screencast Does this happen every time? yes, i have tried it several times and have even tried changing the framerate (default was 10, i changed it to 24) Other information: great app if i could just get it working :)
Usually this happens when your cpu is too slow to encode the video because it skips frames. Try selecting a smaller area of the screen to screencast and/or make it half size or quarter size. Also you better change framerate to be lower, otherwise it puts even more load on your cpu :) Unfortunately there is no way for me to detect yet whether it is using too many resources. There is a QoS system in GStreamer but QoS is currently only enabled on decoding and playback not on encoding.
So at least the recorded file should play back at normal speed even if only a couple of unique frames long. The issue seems to be in theoraenc (and possibly oggmux) when it gets a discontinuity.
Created attachment 73605 [details] The useless outputted file Confirmed. Same when installed from repos on Ubuntu Dapper. Program works fine but the output ogg-gile is useless. The preview in nautilus shows my desktop but playing it it ends in less than a splitsecond. Nevertheless, if I let the program record for a while, the file grows larger and larger, so this is just weird... Here is a sample file
istanbul is not under active development anymore and has not seen code changes for eight years. Its codebase has been archived: https://gitlab.gnome.org/Archive/istanbul/commits/master See https://help.gnome.org/users/gnome-help/stable/screen-shot-record.html for screencast video options that are available in GNOME 3. Closing this report as WONTFIX as part of Bugzilla Housekeeping to reflect reality. Please feel free to reopen this ticket (or rather transfer the project to GNOME Gitlab, as GNOME Bugzilla is deprecated) if anyone takes the responsibility for active development again.