问题
I have a nexus 4 with android KitKat.
I tried screen recording using the following commands:
adb shell screenrecord --verbose /sdcard/demo.mp4
adb shell screenrecord --bit-rate 8000000 --time-limit 30 /sdcard/kitkat.mp4
Both times, the commands returned this message:
Main display is 768x1280 @60.00fps (orientation=0)
Configuring recorder for 768x1280 video at 4.00Mbps
ERROR: unable to create video/avc codec instance
In the debug console I had open in AndroidStudio, the following log messages were shown:
02-02 18:16:29.058 176-4045/? E/OMX-VENC-720p﹕ Is component secure 0
02-02 18:16:29.058 176-4045/? E/OMX-VENC-720p﹕ ERROR: Omx_venc::Comp Init Returning failure
02-02 18:16:29.058 176-4045/? E/OMX-VENC-720p﹕ ERROR: venc_open failed
02-02 18:16:29.058 176-4045/? E/OMX-VENC-720p﹕ Destroy C2D instance
02-02 18:16:29.058 11072-11086/? E/ACodec﹕ Unable to instantiate a decoder for type 'video/avc'.
02-02 18:16:29.058 11072-11085/? E/MediaCodec﹕ Codec reported an error. (omx error 0x80001003, internalError -2147483648)
Does anybody got any idea on how to solve this? (I tried smaller resolutions, but with no success)
回答1:
I got the same problem...and succeed to solve it...but I do not know how...
When I ran:
$>adb.exe shell screenrecord --verbose /sdcard/kitkat.mp4
I got this error:
Main display is 768x1280 @60.00fps (orientation=0) Configuring recorder for 768x1280 video at 4.00Mbp ERROR: unable to create video/avc codec instance
And to solve my problem, I first lowered the bitrate:
$>adb.exe shell screenrecord --bit-rate 1000000 --time-limit 30 --verbose /sdcard/kitkat.mp4
And then when I ran the default command...:
$>adb.exe shell screenrecord --verbose /sdcard/kitkat.mp4
It works...
Maybe because I also re-start the adb server after the first error...
Very strange...
回答2:
Rebooted my phone after having the :
ERROR: unable to create video/avc codec instance
Then it worked...
回答3:
for anyone that might still be experiencing this issue, I had this exact same problem. I couldn't find anything online that would help me fix it.
Anyhow, at some point I opened up the Camera application on my Nexus 4 and I found out that for some reason, I couldn't record videos anymore -- the feature just wouldn't work.
At this point I figured that something may be corrupted. I did a factory data reset of the phone and when the reset completed, I attempted to use screenrecord again and the problem was gone. I was able to record the screen on my phone with no problems at all.
I still have no idea what was causing the problem, or if it has anything to do with the issue that I had with the video recording feature of the Camera application, but resetting my phone to factory settings solved this problem for me.
I hope this helps!
回答4:
I don't know if this will be of much help but:
Despite the error, the device should be actually recording. So ignore the warning and check the /sdcard, your recording should be there.
Also try this (without any of the other stuff)
adb shell screenrecord /sdcard/demo.mp4
This should work. If you get the error
ERROR: unable to configure codec (err-2147483648)
WARNING: failed at ___x___,retrying at ___x___
Don't worry about it.
Just a side note (I'm sure you have this all set), double check your drivers are installed properly and paths are configured, etc.
I'm working on a little project for recording Nexus/KitKat devices: http://goo.gl/LEALYL (Blog post on the project: http://goo.gl/BnBzNw)
回答5:
Try turning off power save mode. Samsung's power save mode lowers the screen rate, screenrecord does not account for this discrepancy. Other ROMs also use this feature.
来源：https://stackoverflow.com/questions/21514457/i-cant-capture-android-screen-using-adb-screen-record-tool