History

sheenachhabra fd2ea22e47 Allow AV1 output mime type in FrameworkMuxer

The `MediaMuxer` (FrameworkMuxer) supports AV1 mime type from API 34.
For this to work track `Format/MediaFormat` must have `CSD`
data.

Change also include providing AV1 option in demo app.

Transmuxing of an AV1 mime type input will not work because
`Extractor` does not extract AV1 CSD data.

Verified changes manually via demo app.

PiperOrigin-RevId: 603002380

2024-01-31 04:02:21 -08:00

src

Allow AV1 output mime type in FrameworkMuxer

2024-01-31 04:02:21 -08:00

BUILD.bazel

Add frame processor based on MediaPipe to demo

2022-05-09 10:56:08 +01:00

build.gradle

Add CompositionPlayer to the Transformer demo app

2023-10-06 03:05:56 -07:00

README.md

Replace or suppress deprecated usages

2024-01-26 10:06:18 -08:00

README.md

Transformer demo

This app demonstrates how to use the Transformer API to modify videos, for example by removing audio or video.

See the demos README for instructions on how to build and run this demo.

MediaPipe frame processing demo

Building the demo app with MediaPipe integration enabled requires some extra manual steps.

Follow the instructions to install MediaPipe.

Copy the Transformer demo's build configuration and MediaPipe graph text protocol buffer under the MediaPipe source tree. This makes it easy to build an AAR with bazel by reusing MediaPipe's workspace.

cd "<path to MediaPipe checkout>"
MEDIAPIPE_ROOT="$(pwd)"
MEDIAPIPE_TRANSFORMER_ROOT="${MEDIAPIPE_ROOT}/mediapipe/java/com/google/mediapipe/transformer"
cd "<path to the transformer demo (containing this readme)>"
TRANSFORMER_DEMO_ROOT="$(pwd)"
mkdir -p "${MEDIAPIPE_TRANSFORMER_ROOT}"
mkdir -p "${TRANSFORMER_DEMO_ROOT}/libs"
cp ${TRANSFORMER_DEMO_ROOT}/BUILD.bazel ${MEDIAPIPE_TRANSFORMER_ROOT}/BUILD
cp ${TRANSFORMER_DEMO_ROOT}/src/withMediaPipe/assets/edge_detector_mediapipe_graph.pbtxt \
  ${MEDIAPIPE_TRANSFORMER_ROOT}

Build the AAR and the binary proto for the demo's MediaPipe graph, then copy them to Transformer.

cd ${MEDIAPIPE_ROOT}
bazel build -c opt --strip=ALWAYS \
  --host_crosstool_top=@bazel_tools//tools/cpp:toolchain \
  --fat_apk_cpu=arm64-v8a,armeabi-v7a \
  --legacy_whole_archive=0 \
  --features=-legacy_whole_archive \
  --copt=-fvisibility=hidden \
  --copt=-ffunction-sections \
  --copt=-fdata-sections \
  --copt=-fstack-protector \
  --copt=-Oz \
  --copt=-fomit-frame-pointer \
  --copt=-DABSL_MIN_LOG_LEVEL=2 \
  --linkopt=-Wl,--gc-sections,--strip-all \
  mediapipe/java/com/google/mediapipe/transformer:edge_detector_mediapipe_aar.aar
cp bazel-bin/mediapipe/java/com/google/mediapipe/transformer/edge_detector_mediapipe_aar.aar \
  ${TRANSFORMER_DEMO_ROOT}/libs
bazel build mediapipe/java/com/google/mediapipe/transformer:edge_detector_binary_graph
cp bazel-bin/mediapipe/java/com/google/mediapipe/transformer/edge_detector_mediapipe_graph.binarypb \
  ${TRANSFORMER_DEMO_ROOT}/src/withMediaPipe/assets

In Android Studio, gradle sync and select the withMediaPipe build variant (this will only appear if the AAR is present), then build and run the demo app and select a MediaPipe-based effect.