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Update the FFmpeg extension readme to use symlinking

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PiperOrigin-RevId: 332012857
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aquilescanta 2020-09-16 16:35:26 +01:00 committed by Oliver Woodman
parent b866c5e424
commit a3cd36beb1
1 changed files with 14 additions and 11 deletions
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25
extensions/ffmpeg/README.md
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@ -41,19 +41,15 @@ NDK_PATH="<path to Android NDK>"
HOST_PLATFORM="linux-x86_64"
```
* Fetch FFmpeg:
* Fetch FFmpeg and checkout an appropriate branch. We cannot guarantee
compatibility with all versions of FFmpeg. We currently recommend version 4.2:
```
cd "${FFMPEG_EXT_PATH}/jni" && \
git clone git://source.ffmpeg.org/ffmpeg ffmpeg
```
* Checkout an appropriate branch of FFmpeg. We cannot guarantee compatibility
with all versions of FFmpeg. We currently recommend version 4.2:
```
cd "${FFMPEG_EXT_PATH}/jni/ffmpeg" && \
git checkout release/4.2
cd "<preferred location for ffmpeg>" && \
git clone git://source.ffmpeg.org/ffmpeg && \
cd ffmpeg && \
git checkout release/4.2 && \
FFMPEG_PATH="$(pwd)"
```
* Configure the decoders to include. See the [Supported formats][] page for
@ -63,6 +59,13 @@ git checkout release/4.2
ENABLED_DECODERS=(vorbis opus flac)
```
* Add a link to the FFmpeg source code in the FFmpeg extension `jni` directory.
```
cd "${FFMPEG_EXT_PATH}/jni" && \
ln -s "$FFMPEG_PATH" ffmpeg
```
* Execute `build_ffmpeg.sh` to build FFmpeg for `armeabi-v7a`, `arm64-v8a`,
`x86` and `x86_64`. The script can be edited if you need to build for
different architectures: