我对 Android Custom Rom 开发还很陌生。我想知道检查编解码器本身的问题是什么。我有调试日志和应用程序本身的副本，但是我无法在安装应用程序后手动更改应用程序源代码。
我目前使用的是 Android 12 GSI，我正在尝试修改一些文件并使其在另一台设备上运行。
这是调试日志：
10-24 03:57:39.788 24987 24987 D RecordingService: onStartCommand com.android.systemui.screenrecord.START
10-24 03:57:39.788 24987 24987 D RecordingService: recording with audio sourceNONE
10-24 03:57:39.790 24987 24987 D ScreenMediaRecorder: start recording
10-24 03:57:39.792 1479 1508 I InputManager-JNI: Setting show touches feature to disabled.
10-24 03:57:39.795 1479 1601 I InputReader: Reconfiguring input devices, changes=SHOW_TOUCHES |
10-24 03:57:39.798 1035 1203 W StagefrightRecorder: stop while neither recording nor paused
10-24 03:57:39.811 24987 24987 W System.err: java.lang.IllegalArgumentException: unsupported size
10-24 03:57:39.811 24987 24987 W System.err: at android.media.MediaCodecInfo$VideoCapabilities.getSupportedFrameRatesFor(MediaCodecInfo.java:1676)
10-24 03:57:39.811 24987 24987 W System.err: at com.android.systemui.screenrecord.ScreenMediaRecorder.getSupportedSize(ScreenMediaRecorder.java:254)
10-24 03:57:39.811 24987 24987 W System.err: at com.android.systemui.screenrecord.ScreenMediaRecorder.prepare(ScreenMediaRecorder.java:130)
10-24 03:57:39.811 24987 24987 W System.err: at com.android.systemui.screenrecord.ScreenMediaRecorder.start(ScreenMediaRecorder.java:270)
10-24 03:57:39.811 24987 24987 W System.err: at com.android.systemui.screenrecord.RecordingService.startRecording(RecordingService.java:235)
10-24 03:57:39.811 24987 24987 W System.err: at com.android.systemui.screenrecord.RecordingService.onStartCommand(RecordingService.java:146)
10-24 03:57:39.812 24987 24987 W System.err: at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4643)
10-24 03:57:39.812 24987 24987 W System.err: at android.app.ActivityThread.access$2000(ActivityThread.java:247)
10-24 03:57:39.812 24987 24987 W System.err: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2095)
10-24 03:57:39.812 24987 24987 W System.err: at android.os.Handler.dispatchMessage(Handler.java:106)
10-24 03:57:39.812 24987 24987 W System.err: at android.os.Looper.loopOnce(Looper.java:201)
10-24 03:57:39.812 24987 24987 W System.err: at android.os.Looper.loop(Looper.java:288)
10-24 03:57:39.812 24987 24987 W System.err: at android.app.ActivityThread.main(ActivityThread.java:7842)
10-24 03:57:39.812 24987 24987 W System.err: at java.lang.reflect.Method.invoke(Native Method)
10-24 03:57:39.812 24987 24987 W System.err: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
完全不相关，但我正在研究 scrcpy 的相同问题，scrcpy 是 PC 多平台上的屏幕镜像工具。遇到相同的录制问题，直到我手动更改编码器，默认使用“c2.android.avc.encoder”。
我只有一个调试日志，但我没有办法跟踪所述“不支持的大小”。我去谷歌源代码并在这里准确地查看了它：
android.media.MediaCodecInfo$VideoCapabilities.getSupportedFrameRatesFor(MediaCodecInfo.java:1676)
并找到了这个功能：
private int[] getSupportedSize(final int screenWidth, final int screenHeight, int refreshRate) {
double maxScale = 0;
MediaCodecList codecList = new MediaCodecList(MediaCodecList.REGULAR_CODECS);
MediaCodecInfo.VideoCapabilities maxInfo = null;
for (MediaCodecInfo codec : codecList.getCodecInfos()) {
String videoType = MediaFormat.MIMETYPE_VIDEO_AVC;
String[] types = codec.getSupportedTypes();
for (String t : types) {
if (!t.equalsIgnoreCase(videoType)) {
continue;
}
MediaCodecInfo.CodecCapabilities capabilities =
codec.getCapabilitiesForType(videoType);
if (capabilities != null && capabilities.getVideoCapabilities() != null) {
MediaCodecInfo.VideoCapabilities vc = capabilities.getVideoCapabilities();
int width = vc.getSupportedWidths().getUpper();
int height = vc.getSupportedHeights().getUpper();
int screenWidthAligned = screenWidth;
if (screenWidthAligned % vc.getWidthAlignment() != 0) {
screenWidthAligned -= (screenWidthAligned % vc.getWidthAlignment());
}
int screenHeightAligned = screenHeight;
if (screenHeightAligned % vc.getHeightAlignment() != 0) {
screenHeightAligned -= (screenHeightAligned % vc.getHeightAlignment());
}
if (width >= screenWidthAligned && height >= screenHeightAligned
&& vc.isSizeSupported(screenWidthAligned, screenHeightAligned)) {
// Desired size is supported, now get the rate
int maxRate = vc.getSupportedFrameRatesFor(screenWidthAligned,
screenHeightAligned).getUpper().intValue();
if (maxRate < refreshRate) {
refreshRate = maxRate;
}
Log.d(TAG, "Screen size supported at rate " + refreshRate);
return new int[]{screenWidthAligned, screenHeightAligned, refreshRate};
}
// Otherwise, continue searching
double scale = Math.min(((double) width / screenWidth),
((double) height / screenHeight));
if (scale > maxScale) {
maxScale = Math.min(1, scale);
maxInfo = vc;
}
}
}
}
// Resize for max supported size
int scaledWidth = (int) (screenWidth * maxScale);
int scaledHeight = (int) (screenHeight * maxScale);
if (scaledWidth % maxInfo.getWidthAlignment() != 0) {
scaledWidth -= (scaledWidth % maxInfo.getWidthAlignment());
}
if (scaledHeight % maxInfo.getHeightAlignment() != 0) {
scaledHeight -= (scaledHeight % maxInfo.getHeightAlignment());
}
// Find max supported rate for size
int maxRate = maxInfo.getSupportedFrameRatesFor(scaledWidth, scaledHeight)
.getUpper().intValue();
if (maxRate < refreshRate) {
refreshRate = maxRate;
}
Log.d(TAG, "Resized by " + maxScale + ": " + scaledWidth + ", " + scaledHeight
+ ", " + refreshRate);
return new int[]{scaledWidth, scaledHeight, refreshRate};
}
那么我可以从哪里开始探测导致不支持的大小错误的错误？
我遇到了类似的情况，我无法使用我的屏幕录像机录像和投射。我不知道如何修复它我目前使用的是 Android 14 GSI 我不知道你是否可以帮助我修复它