{"id":25003,"date":"2024-05-16T16:46:46","date_gmt":"2024-05-16T07:46:46","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=25003"},"modified":"2024-05-16T16:46:46","modified_gmt":"2024-05-16T07:46:46","slug":"vlc%e3%81%a7rtsp%e8%a6%8b%e3%81%a6%e3%81%be%e3%81%99","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=25003","title":{"rendered":"VLC\u3067RTSP\u898b\u3066\u307e\u3059"},"content":{"rendered":"\n

本当にRTSPをRaspberry Pi (RPi)で見るのには七転八倒してきました．ここのところはVLCで見ていますが，VLCのupgradeが来るたびに良くなったり悪くなったりです．<\/p>\n\n\n\n

現在は，Raspberry Pi 3 Model B+ RAM 1GB (RPi3+)とRaspberry Pi 4 Model B RAM 4GB (RPi4)の2台で見てます．どちらもRaspberry Pi OS (RPiOS) をSDカードにインストールして普通のPIXEL1<\/a><\/sup>RPiOSのdefaultのデスクトップ．<\/span>で動かしています．<\/p>\n\n\n\n

以前はRPi3+とRaspberry Pi 3 Model B (RPi3)を動かしていましたが，RPi3のWi-Fiインターフェースが故障し，有線LANではつながりますがいろいろ不便なので引退させ，RPi4に置き換えました．<\/p>\n\n\n

\n
\"\"
ケース全体がパッシブなヒートシンクになっているケースに入れたRaspberry Pi 3 Model B (現在はRaspberry Pi 3 Model B+を入れてます)．2022年8月撮影<\/figcaption><\/figure>\n<\/div>\n\n\n

現在のVLCの状況(2024年5月17日)<\/h3>\n\n\n\n

現在Raspberry Pi OSのVLCは，3.0.20で，もちろん関連するライブラリーに依存するところが大きいと思いますが，かなりひどいです．<\/p>\n\n\n\n

画像の時間が止まったり急に動いたりの繰り返しです．<\/p>\n\n\n\n

撮影したビデオでは順番が逆になっていて前半は遅れた分を取り返すべく，2倍近いスピードでタイムスタンプが進みますが，45秒でしばらく止まり，2秒分進みますがまた47秒でとまります．こんな感じの繰り返しです．防犯カメラが正常に動いているのは防犯カメラの専用アプリで確認してます2<\/a><\/sup>RTSPサーバーが正常でない可能性は否定できませんが😅<\/span>．<\/p>\n\n\n\n

パフォーマンスの良いRPi4のほうでこれですから，RPi3+では使い物になりません3<\/a><\/sup>Raspberry Pi 5 Model Bではずっとましですが時間軸のギクシャクはあります．<\/span>．一刻も早く改善してほしいものです．<\/p>\n\n\n\n

VLCでRTSP見てません（2024年5月19日追記）<\/h3>\n\n\n\n

結局今のバージョンのVLCはどうしようもないので，ffplay (FFMPEG)に切り替えました．ffplayだと音声が再生できないので，早くVLCがまともに戻ることを期待しす．<\/p>\n","protected":false},"excerpt":{"rendered":"

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