Along with !4450, this fixes WMV videos in microkiri (https://bugs.winehq.org/show_bug.cgi?id=9127#c102) and Wagamama High Spec Trial Edition (https://wagahigh.com/download_trial.php#normal ; ダウンロード means download).
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v8: wmvcore/tests: Add tests for compressed output.
winegstreamer: Implement compressed output support in WMSyncReader.
winegstreamer: Leave pts/duration unchanged if they're not set.
winegstreamer: Introduce mutex for wm_reader read_thread_shutdown and wg_parser.
winegstreamer: Move file size to struct wm_reader.
winegstreamer: Fill in a few more pieces of WMV format handling.
winegstreamer: Add codec_data to WMVs.
https://gitlab.winehq.org/wine/wine/-/merge_requests/4449