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Video Bitrate "hack"
Some of you may have noticed, that the videobitrate is kinda low for 1080p video (around 12Mbit/s).
I've found a gstreamer preset file where we can change this. 24Mbit was too much, I tried upto 20Mbit/s which seems to work without framedrops. I tried changing framerate (at 30 currently) and audio bitrate (AAC at 128Kbit/s) too, but failed so far. All you need to do is change in the following file: /usr/share/jolla-camera/presets/GstOMXMPEG4VideoEnc-omxmpeg4videoenc.prs the line: target-bitrate=12000000 to the following: target-bitrate=20000000 Maybe someone else with more gstreamer knowledge can dig more options out of this. http://abload.de/img/unbenanntl4ssn.png |
Re: Video Bitrate "hack"
Sorry, misread the post. It's about the camera encoder.
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Re: Video Bitrate "hack"
Any news on this?
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Re: Video Bitrate "hack"
Not yet, had a chat with a Jolla emloye about it, but he had holidays at that time ;)
Meanwhile I started this on together: https://together.jolla.com/question/...in-camera-app/ Please vote up! |
Re: Video Bitrate "hack"
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Edit: Never mind. I did a file with PC and moved it to Jolla with DropBox and moved it whit Terminal. Video is more smoother now, thanks! |
Re: Video Bitrate "hack"
Oh, I hadn't realized that Jolla uses "old" MPEG4 h.263, instead of AVC/h.264. That would cause the need for higher bitrate. But there seems to be config file for h.264 aswell (GstOMXH264Enc-omxh264enc.prs), but not used for some reason?
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Re: Video Bitrate "hack"
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Re: Video Bitrate "hack"
In the upcoming release (due Monday, according to some tweets) the camera will use h.264. See comments on TJC topic.
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Re: Video Bitrate "hack"
There are no tweets. I did the commit that switched recording to H264 myself ;-)
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Re: Video Bitrate "hack"
I meant the tweets on SFOS 1.1.9/2.0 E.A.
But why did it took so long to enable H264? And why no hardware acceleration for audio/AAC? Is it because Qualcomm is hostile to open source? |
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