mirror of
https://github.com/samsonjs/media.git
synced 2026-04-01 10:35:48 +00:00
1d2116c53a
This change aims to prioritise tracks that have a 'smooth enough for video' frame rate, without always selecting the track with the highest frame rate. In particular MP4 files extracted from motion photos sometimes have two HEVC tracks, with the higher-res one having a very low frame rate (not intended for use in video playback). Before this change `DefaultTrackSelector` would pick the low-fps, high-res track. This change adds a somewhat arbitrary 10fps threshold for "smooth video playback", meaning any tracks above this threshold are selected in preference to tracks below it. Within the tracks above the threshold other attributes are used to select the preferred track. We deliberately don't pick the highest-fps track (over pixel count and bitrate), because most users would prefer to see a 30fps 4k track over a 60fps 720p track. This change also includes a test MP4 file, extracted from the existing `jpeg/pixel-motion-photo-2-hevc-tracks.jpg` file by logging `mp4StartPosition` in [`MotionPhotoDescription.getMotionPhotoMetadata`]( |
||
|---|---|---|
| .. | ||
| cast | ||
| common | ||
| container | ||
| database | ||
| datasource | ||
| datasource_cronet | ||
| datasource_okhttp | ||
| datasource_rtmp | ||
| decoder | ||
| decoder_av1 | ||
| decoder_ffmpeg | ||
| decoder_flac | ||
| decoder_midi | ||
| decoder_opus | ||
| decoder_vp9 | ||
| effect | ||
| exoplayer | ||
| exoplayer_dash | ||
| exoplayer_hls | ||
| exoplayer_ima | ||
| exoplayer_rtsp | ||
| exoplayer_smoothstreaming | ||
| exoplayer_workmanager | ||
| extractor | ||
| muxer | ||
| session | ||
| test_data | ||
| test_exoplayer_playback | ||
| test_session_common | ||
| test_session_current | ||
| test_utils | ||
| test_utils_robolectric | ||
| transformer | ||
| ui | ||
| ui_leanback | ||
| lint.xml | ||