我正在尝试使用 youtube dl 命令行从流媒体 URL 下载最佳视频和音频，以下是响应。了解这一点后，我如何才能获得 MP4 格式的最佳视频（带音频）？
hls-audio-0-en__Main_-0 mp4 audio only [en]
hls-audio-0-en__Main_-1 mp4 audio only [en]
dash-6f83f6b4-5475-475f-8955-b2aca8bd9b54-0 m4a audio only [en] DASH audio 96k , m4a_dash container, mp4a.40.2 (48000Hz)
dash-6f83f6b4-5475-475f-8955-b2aca8bd9b54-1 m4a audio only [en] DASH audio 96k , m4a_dash container, mp4a.40.2 (48000Hz)
dash-b90bf8a1-4681-438b-80f9-17ccbfd52366-0 mp4 480x270 DASH video 96k , mp4_dash container, avc1.420015, video only
dash-b90bf8a1-4681-438b-80f9-17ccbfd52366-1 mp4 480x270 DASH video 96k , mp4_dash container, avc1.420015, video only
dash-bc267a90-3ac3-4eed-a4b9-73bd6b94bec7-0 mp4 480x270 DASH video 149k , mp4_dash container, avc1.420015, video only
dash-bc267a90-3ac3-4eed-a4b9-73bd6b94bec7-1 mp4 480x270 DASH video 149k , mp4_dash container, avc1.420015, video only
hls-211-0 mp4 480x270 211k , avc1.420015, video only
hls-211-1 mp4 480x270 211k , avc1.420015, video only
hls-269-0 mp4 480x270 269k , avc1.420015, video only
hls-269-1 mp4 480x270 269k , avc1.420015, video only
dash-da90237b-f0a3-4f51-8962-d41cb1d9babe-0 mp4 640x360 DASH video 298k , mp4_dash container, avc1.42001e, video only
dash-da90237b-f0a3-4f51-8962-d41cb1d9babe-1 mp4 640x360 DASH video 298k , mp4_dash container, avc1.42001e, video only
hls-433-0 mp4 640x360 433k , avc1.42001e, video only
hls-433-1 mp4 640x360 433k , avc1.42001e, video only
dash-fcf57c07-c6e3-4761-8793-d2722f438deb-0 mp4 480x270 DASH video 449k , mp4_dash container, avc1.420015, video only
dash-fcf57c07-c6e3-4761-8793-d2722f438deb-1 mp4 480x270 DASH video 449k , mp4_dash container, avc1.420015, video only
hls-599-0 mp4 480x270 599k , avc1.420015, video only
hls-599-1 mp4 480x270 599k , avc1.420015, video only
dash-f1e7f24b-d987-42c0-a361-8aca5ed5b332-0 mp4 640x360 DASH video 600k , mp4_dash container, avc1.4d001e, video only
dash-f1e7f24b-d987-42c0-a361-8aca5ed5b332-1 mp4 640x360 DASH video 600k , mp4_dash container, avc1.4d001e, video only
hls-765-0 mp4 640x360 765k , avc1.4d001e, video only
hls-765-1 mp4 640x360 765k , avc1.4d001e, video only
dash-1374be5e-cf80-4070-908f-30072d7ac63c-0 mp4 960x540 DASH video 897k , mp4_dash container, avc1.4d001f, video only
dash-1374be5e-cf80-4070-908f-30072d7ac63c-1 mp4 960x540 DASH video 897k , mp4_dash container, avc1.4d001f, video only
dash-92c6d340-b465-4dac-8d90-b778ab129c3b-0 mp4 640x360 DASH video 902k , mp4_dash container, avc1.4d001e, video only
dash-92c6d340-b465-4dac-8d90-b778ab129c3b-1 mp4 640x360 DASH video 902k , mp4_dash container, avc1.4d001e, video only
hls-1092-0 mp4 960x540 1092k , avc1.4d001f, video only
hls-1092-1 mp4 960x540 1092k , avc1.4d001f, video only
hls-1097-0 mp4 640x360 1097k , avc1.4d001e, video only
hls-1097-1 mp4 640x360 1097k , avc1.4d001e, video only
dash-db8ce174-87d5-4a7c-ad82-339f0762ac13-0 mp4 1024x576 DASH video 1198k , mp4_dash container, avc1.4d001f, video only
dash-db8ce174-87d5-4a7c-ad82-339f0762ac13-1 mp4 1024x576 DASH video 1198k , mp4_dash container, avc1.4d001f, video only
hls-1423-0 mp4 1024x576 1423k , avc1.4d001f, video only
hls-1423-1 mp4 1024x576 1423k , avc1.4d001f, video only
dash-20e55c72-e12b-4b9c-9e6c-b0e2beb1b4dc-0 mp4 1280x720 DASH video 1501k , mp4_dash container, avc1.4d001f, video only
dash-20e55c72-e12b-4b9c-9e6c-b0e2beb1b4dc-1 mp4 1280x720 DASH video 1501k , mp4_dash container, avc1.4d001f, video only
hls-1756-0 mp4 1280x720 1756k , avc1.4d001f, video only
hls-1756-1 mp4 1280x720 1756k , avc1.4d001f, video only (best)
答案1
这将选择最佳的视频和音频质量：
youtube-dl -f bestvideo+bestaudio youtube.com/watch?v=videocode
然后，如果最佳视频和音频流不是该mp4格式，您也可以传递一个--recode-video mp4选项。
您在问题中显示的输出没有显示任何其他视频格式，因此mp4在这种情况下您不需要添加额外的选项。
答案2
您可以使用yt-dlp（它是 youtube-dl 的分支）在选择格式和发布下载选项方面有更多选项。而且它更新得更快