Androidアプリの画面をsnap版のscrcpyでビデオデバイスに流し込もうとしたら少しハマったのでメモしておきます．
Debian Bullseye amd64のscrcpyでAndroidの画面をビデオデバイスに出力してみようと --v4l2-sink オプションを指定したところバージョンが古く未対応でした．
$ /bin/scrcpy --v4l2-sink /dev/video8 /bin/scrcpy: unrecognized option '--v4l2-sink'
Debian sidの 1.23-1 だと存在するオプションなのですがそれを入れると依存関係がおかしくなりそうなので避けたいところ．
Androidアプリの画面をsnap版のscrcpyでビデオデバイスに流し込もうとしたら少しハマったのでメモしておきます．
Debian Bullseye amd64のscrcpyでAndroidの画面をビデオデバイスに出力してみようと --v4l2-sink オプションを指定したところバージョンが古く未対応でした．
$ /bin/scrcpy --v4l2-sink /dev/video8 /bin/scrcpy: unrecognized option '--v4l2-sink'
Debian sidの 1.23-1 だと存在するオプションなのですがそれを入れると依存関係がおかしくなりそうなので避けたいところ．
$ rmadison scrcpy scrcpy | 1.17-1 | stable | source, amd64, arm64, armel, armhf, i386, mips64el, mipsel, ppc64el, s390x scrcpy | 1.23-1 | unstable | source, amd64, arm64, armel, armhf, i386, mips64el, mipsel, ppc64el, s390x scrcpy | 1.23-1 | unstable-debug | source
snapを確認すると1.23のようなのでこれを導入してみました．
$ snap find scrcpy Name Version Publisher Notes Summary scrcpy v1.23 sisco311 - Display and control your Android device guiscrcpy v4.9.0 srevinsaju - An opensource graphical user interface for Android screen mirroring $ snao install scrcpy $ snap info scrcpy name: scrcpy summary: Display and control your Android device publisher: sisco311 store-url: https://snapcraft.io/scrcpy contact: https://github.com/sisco311/scrcpy-snap/issues license: Apache-2.0 description: | This application provides display and control of Android devices connected on USB (or over TCP/IP). It does not require any root access. This is an unofficial snap. The code of scrcpy can be found at: https://github.com/Genymobile/scrcpy commands: - scrcpy.adb - scrcpy snap-id: M7yvgnqOvyQj64bolfpawIAEwHv7dQ5G tracking: latest/stable refresh-date: today at 01:27 JST channels: latest/stable: v1.23 2022-03-03 (379) 87MB - latest/candidate: ↑ latest/beta: v1.23-2-gadbe7908 2022-03-02 (376) 87MB - latest/edge: v1.21-2-g5704ec6 2021-12-07 (358) 101MB - installed: v1.23 (379) 87MB -
1.23です．
$ which scrcpy /snap/bin/scrcpy $ scrcpy --version scrcpy 1.23 <https://github.com/Genymobile/scrcpy> Dependencies (compiled / linked): - SDL: 2.0.8 / 2.0.8 - libavcodec: 57.107.100 / 57.107.100 - libavformat: 57.83.100 / 57.83.100 - libavutil: 55.78.100 / 55.78.100 - libavdevice: 57.10.100 / 57.10.100 - libusb: - / 1.0.21
早速使おうと思いましたがエラーとなってしまいました．
$ scrcpy --v4l2-sink /dev/video8 scrcpy 1.23 <https://github.com/Genymobile/scrcpy> INFO: Video orientation is locked for v4l2 sink. See --lock-video-orientation. /usr/local/share/scrcpy/scrcpy-server: 1 file pushed. 6.8 MB/s (41123 bytes in 0.006s) [server] INFO: Device: motorola moto g31(w) (Android 11) INFO: Renderer: opengl INFO: OpenGL version: 3.0 Mesa 20.0.8 INFO: Trilinear filtering enabled INFO: Initial texture: 1080x2400 ERROR: Failed to open output device: /dev/video8 ERROR: Could not open frame sink 1 ERROR: Could not open decoder sinks ERROR: Could not open packet sink 0 ERROR: Could not open demuxer sinks WARN: Device disconnected WARN: Killing the server...
このデバイスは存在するし，別のアプリケーションから動画を流し込むと動作します．
issueを検索すると以下のコメントを見つけました．
以下のコマンドでsnapのscrcpyにビデオデバイスを接続する必要があるようです．
$ snap connect scrcpy:camera
認識させたあと実行するとうまく行きました．
$ scrcpy --v4l2-sink /dev/video8 --lock-video-orientation --max-size=720 -N scrcpy 1.23 <https://github.com/Genymobile/scrcpy> /usr/local/share/scrcpy/scrcpy-server: 1 file pushed. 10.6 MB/s (41123 bytes in 0.004s) [server] INFO: Device: motorola moto g31(w) (Android 11) INFO: v4l2 sink started to device: /dev/video8
環境
$ snap info scrcpy | grep installed: installed: v1.23 (379) 87MB - $ dpkg-query -W snap v4l2loopback-dkms v4l2loopback-source v4l2loopback-utils snap v4l2loopback-dkms 0.12.5-1 v4l2loopback-source 0.12.5-1 v4l2loopback-utils 0.12.5-1 $ lsb_release -dr Description: Debian GNU/Linux 11 (bullseye) Release: 11 $ uname -a Linux yoga-260 5.16.15-le9 #10 SMP PREEMPT Sat Mar 19 01:52:06 JST 2022 x86_64 GNU/Linux $ arch x86_64
関連URL
$ rmadison scrcpy scrcpy | 1.17-1 | stable | source, amd64, arm64, armel, armhf, i386, mips64el, mipsel, ppc64el, s390x scrcpy | 1.23-1 | unstable | source, amd64, arm64, armel, armhf, i386, mips64el, mipsel, ppc64el, s390x scrcpy | 1.23-1 | unstable-debug | source
snapを確認すると1.23のようなのでこれを導入してみました．
$ snap find scrcpy Name Version Publisher Notes Summary scrcpy v1.23 sisco311 - Display and control your Android device guiscrcpy v4.9.0 srevinsaju - An opensource graphical user interface for Android screen mirroring $ snao install scrcpy $ snap info scrcpy name: scrcpy summary: Display and control your Android device publisher: sisco311 store-url: https://snapcraft.io/scrcpy contact: https://github.com/sisco311/scrcpy-snap/issues license: Apache-2.0 description: | This application provides display and control of Android devices connected on USB (or over TCP/IP). It does not require any root access. This is an unofficial snap. The code of scrcpy can be found at: https://github.com/Genymobile/scrcpy commands: - scrcpy.adb - scrcpy snap-id: M7yvgnqOvyQj64bolfpawIAEwHv7dQ5G tracking: latest/stable refresh-date: today at 01:27 JST channels: latest/stable: v1.23 2022-03-03 (379) 87MB - latest/candidate: ↑ latest/beta: v1.23-2-gadbe7908 2022-03-02 (376) 87MB - latest/edge: v1.21-2-g5704ec6 2021-12-07 (358) 101MB - installed: v1.23 (379) 87MB -
1.23です．
$ which scrcpy /snap/bin/scrcpy $ scrcpy --version scrcpy 1.23 <https://github.com/Genymobile/scrcpy> Dependencies (compiled / linked): - SDL: 2.0.8 / 2.0.8 - libavcodec: 57.107.100 / 57.107.100 - libavformat: 57.83.100 / 57.83.100 - libavutil: 55.78.100 / 55.78.100 - libavdevice: 57.10.100 / 57.10.100 - libusb: - / 1.0.21
早速使おうと思いましたがエラーとなってしまいました．
$ scrcpy --v4l2-sink /dev/video8 scrcpy 1.23 <https://github.com/Genymobile/scrcpy> INFO: Video orientation is locked for v4l2 sink. See --lock-video-orientation. /usr/local/share/scrcpy/scrcpy-server: 1 file pushed. 6.8 MB/s (41123 bytes in 0.006s) [server] INFO: Device: motorola moto g31(w) (Android 11) INFO: Renderer: opengl INFO: OpenGL version: 3.0 Mesa 20.0.8 INFO: Trilinear filtering enabled INFO: Initial texture: 1080x2400 ERROR: Failed to open output device: /dev/video8 ERROR: Could not open frame sink 1 ERROR: Could not open decoder sinks ERROR: Could not open packet sink 0 ERROR: Could not open demuxer sinks WARN: Device disconnected WARN: Killing the server...
このデバイスは存在するし，別のアプリケーションから動画を流し込むと動作します．
issueを検索すると以下のコメントを見つけました．
以下のコマンドでsnapのscrcpyにビデオデバイスを接続する必要があるようです．
$ snap connect scrcpy:camera
認識させたあと実行するとうまく行きました．
$ scrcpy --v4l2-sink /dev/video8 --lock-video-orientation --max-size=720 -N scrcpy 1.23 <https://github.com/Genymobile/scrcpy> /usr/local/share/scrcpy/scrcpy-server: 1 file pushed. 10.6 MB/s (41123 bytes in 0.004s) [server] INFO: Device: motorola moto g31(w) (Android 11) INFO: v4l2 sink started to device: /dev/video8
環境
$ snap info scrcpy | grep installed: installed: v1.23 (379) 87MB - $ dpkg-query -W snap v4l2loopback-dkms v4l2loopback-source v4l2loopback-utils snap v4l2loopback-dkms 0.12.5-1 v4l2loopback-source 0.12.5-1 v4l2loopback-utils 0.12.5-1 $ lsb_release -dr Description: Debian GNU/Linux 11 (bullseye) Release: 11 $ uname -a Linux yoga-260 5.16.15-le9 #10 SMP PREEMPT Sat Mar 19 01:52:06 JST 2022 x86_64 GNU/Linux $ arch x86_64
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