feat(server): easy RKMPP video encoding (#7460)

* feat(server): easy RKMPP video encoding

* make linter happy

docker/hwaccel.transcoding.yml

@@ -38,12 +38,6 @@ services:
       - /dev/dri:/dev/dri
       - /dev/dma_heap:/dev/dma_heap
       - /dev/mpp_service:/dev/mpp_service
-    volumes:
-      - /usr/bin/ffmpeg:/usr/bin/ffmpeg_mpp:ro
-      - /lib/aarch64-linux-gnu:/lib/ffmpeg-mpp:ro
-      - /lib/aarch64-linux-gnu/libblas.so.3:/lib/ffmpeg-mpp/libblas.so.3:ro # symlink is resolved by mounting
-      - /lib/aarch64-linux-gnu/liblapack.so.3:/lib/ffmpeg-mpp/liblapack.so.3:ro # symlink is resolved by mounting
-      - /lib/aarch64-linux-gnu/pulseaudio/libpulsecommon-15.99.so:/lib/ffmpeg-mpp/libpulsecommon-15.99.so:ro
 
   vaapi:
     devices:

server/src/domain/media/media.service.spec.ts

@@ -1801,7 +1801,7 @@ describe(MediaService.name, () => {
         {
           inputOptions: [],
           outputOptions: [
-            `-c:v hevc_rkmpp_encoder`,
+            `-c:v hevc_rkmpp`,
             '-c:a copy',
             '-movflags faststart',
             '-fps_mode passthrough',
@@ -1810,17 +1810,12 @@ describe(MediaService.name, () => {
             '-g 256',
             '-tag:v hvc1',
             '-v verbose',
+            '-vf scale=-2:720,format=yuv420p',
             '-level 153',
             '-rc_mode 3',
-            '-quality_min 0',
-            '-quality_max 100',
             '-b:v 10000k',
-            '-width 1280',
-            '-height 720',
           ],
           twoPass: false,
-          ffmpegPath: 'ffmpeg_mpp',
-          ldLibraryPath: '/lib/aarch64-linux-gnu:/lib/ffmpeg-mpp',
         },
       );
     });
@@ -1841,7 +1836,7 @@ describe(MediaService.name, () => {
         {
           inputOptions: [],
           outputOptions: [
-            `-c:v h264_rkmpp_encoder`,
+            `-c:v h264_rkmpp`,
             '-c:a copy',
             '-movflags faststart',
             '-fps_mode passthrough',
@@ -1849,16 +1844,12 @@ describe(MediaService.name, () => {
             '-map 0:1',
             '-g 256',
             '-v verbose',
+            '-vf scale=-2:720,format=yuv420p',
             '-level 51',
             '-rc_mode 2',
-            '-quality_min 51',
-            '-quality_max 51',
-            '-width 1280',
-            '-height 720',
+            '-qp_init 30',
           ],
           twoPass: false,
-          ffmpegPath: 'ffmpeg_mpp',
-          ldLibraryPath: '/lib/aarch64-linux-gnu:/lib/ffmpeg-mpp',
         },
       );
     });

server/src/domain/media/media.util.ts

@@ -607,16 +607,6 @@ export class VAAPIConfig extends BaseHWConfig {
 }
 
 export class RKMPPConfig extends BaseHWConfig {
-  getOptions(target: TranscodeTarget, videoStream: VideoStreamInfo, audioStream?: AudioStreamInfo): TranscodeOptions {
-    const options = super.getOptions(target, videoStream, audioStream);
-    options.ffmpegPath = 'ffmpeg_mpp';
-    options.ldLibraryPath = '/lib/aarch64-linux-gnu:/lib/ffmpeg-mpp';
-    if ([TranscodeTarget.ALL, TranscodeTarget.VIDEO].includes(target)) {
-      options.outputOptions.push(...this.getSizeOptions(videoStream));
-    }
-    return options;
-  }
-
   eligibleForTwoPass(): boolean {
     return false;
   }
@@ -628,18 +618,6 @@ export class RKMPPConfig extends BaseHWConfig {
     return [];
   }
 
-  getFilterOptions(videoStream: VideoStreamInfo) {
-    return this.shouldToneMap(videoStream) ? this.getToneMapping() : [];
-  }
-
-  getSizeOptions(videoStream: VideoStreamInfo) {
-    if (this.shouldScale(videoStream)) {
-      const { width, height } = this.getSize(videoStream);
-      return [`-width ${width}`, `-height ${height}`];
-    }
-    return [];
-  }
-
   getPresetOptions() {
     switch (this.config.targetVideoCodec) {
       case VideoCodec.H264: {
@@ -659,12 +637,11 @@ export class RKMPPConfig extends BaseHWConfig {
   getBitrateOptions() {
     const bitrate = this.getMaxBitrateValue();
     if (bitrate > 0) {
-      return ['-rc_mode 3', '-quality_min 0', '-quality_max 100', `-b:v ${bitrate}${this.getBitrateUnit()}`];
-    } else {
-      // convert CQP from 51-10 to 0-100, values below 10 are set to 10
-      const quality = Math.floor(125 - Math.max(this.config.crf, 10) * (125 / 51));
-      return ['-rc_mode 2', `-quality_min ${quality}`, `-quality_max ${quality}`];
+      // -b:v specifies max bitrate, average bitrate is derived automatically...
+      return ['-rc_mode 3', `-b:v ${bitrate}${this.getBitrateUnit()}`];
     }
+    // use CRF value as QP value
+    return ['-rc_mode 2', `-qp_init ${this.config.crf}`];
   }
 
   getSupportedCodecs() {
@@ -672,6 +649,6 @@ export class RKMPPConfig extends BaseHWConfig {
   }
 
   getVideoCodec(): string {
-    return `${this.config.targetVideoCodec}_rkmpp_encoder`;
+    return `${this.config.targetVideoCodec}_rkmpp`;
   }
 }

server/src/domain/repositories/media.repository.ts

@@ -51,8 +51,6 @@ export interface TranscodeOptions {
   inputOptions: string[];
   outputOptions: string[];
   twoPass: boolean;
-  ffmpegPath?: string;
-  ldLibraryPath?: string;
 }
 
 export interface BitrateDistribution {

server/src/infra/repositories/media.repository.ts

@@ -76,18 +76,7 @@ export class MediaRepository implements IMediaRepository {
   transcode(input: string, output: string | Writable, options: TranscodeOptions): Promise<void> {
     if (!options.twoPass) {
       return new Promise((resolve, reject) => {
-        const oldLdLibraryPath = process.env.LD_LIBRARY_PATH;
-        if (options.ldLibraryPath) {
-          // fluent ffmpeg does not allow to set environment variables, so we do it manually
-          process.env.LD_LIBRARY_PATH = this.chainPath(oldLdLibraryPath || '', options.ldLibraryPath);
-        }
-        try {
-          this.configureFfmpegCall(input, output, options).on('error', reject).on('end', resolve).run();
-        } finally {
-          if (options.ldLibraryPath) {
-            process.env.LD_LIBRARY_PATH = oldLdLibraryPath;
-          }
-        }
+        this.configureFfmpegCall(input, output, options).on('error', reject).on('end', resolve).run();
       });
     }
 
@@ -121,7 +110,6 @@ export class MediaRepository implements IMediaRepository {
 
   configureFfmpegCall(input: string, output: string | Writable, options: TranscodeOptions) {
     return ffmpeg(input, { niceness: 10 })
-      .setFfmpegPath(options.ffmpegPath || 'ffmpeg')
       .inputOptions(options.inputOptions)
       .outputOptions(options.outputOptions)
       .output(output)