The constant AV_CODEC_ID_AV1 was introduced in FFmpeg 3.3. Add an ifdef to support older versions. Fixes #3939 <https://github.com/Genymobile/scrcpy/issues/3939>
The constant AV_CODEC_ID_AV1 was introduced in FFmpeg 3.3. Add an ifdef to support older versions. Fixes #3939 <https://github.com/Genymobile/scrcpy/issues/3939>