Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- ffmpeg [2021/08/25 13:40] – Fabian Horst
+++ ffmpeg [2022/12/27 17:57] – Fabian Horst
@@ Zeile 1: / Zeile 1: @@
 ====== ffmpeg ======
+ffmpeg installieren:
+  * Windows: https://www.gyan.dev/ffmpeg/builds/
+  * Linux: sudo apt-get install ffmpeg
+  * macOS: brew install ffmpeg
+Chris Video Anleitung: https://www.youtube.com/watch?v=t973zd4s6R4&t=284s
+===== Yuneec Thermal Videos aufteilen =====
+Um die Videos der Drohne mit 2 Video Spuren aufzuteilen kann folgender Befehl helfen:
+Thermalvideo exportieren:
+<code>
+ffmpeg -i "YUN_0210.mp4" -y -vcodec libx264  -movflags faststart -map 0:v:1 -pix_fmt yuv420p "YUN_0210-thermal.mp4"
+</code>
+Normalvideo exportieren:
+<code>
+ffmpeg -i "YUN_0210.mp4" -y -vcodec libx264  -movflags faststart -map 0:v:0 -pix_fmt yuv420p "YUN_0210-normal.mp4"
+</code>
+Als Script: https://github.com/Wlanfr3ak/mixed-scripts/blob/master/yuneec-ffmpeg.sh
+Windoof: https://github.com/Wlanfr3ak/mixed-scripts/blob/master/yuneec-ffmpeg.bat
+Quelle: https://emamonline.smartertrack.com/kb/a153/extract-specific-video-and-audio-tracks-using-ffmpeg.aspx
+===== AXIS Video umwandeln =====
+<code>ffmpeg -i 20220626_225001_20220626_232959.mkv -codec copy test.mp4</code>
+===== BluRay ISO to mp4 etc. =====
+<code>https://unixsheikh.com/tutorials/remuxing-iso-dvd-or-bluray-using-cat-and-ffmpeg-on-linux.html</code>
+===== CUDA / NVIDIA Beschleunigung =====
+https://docs.nvidia.com/video-technologies/video-codec-sdk/ffmpeg-with-nvidia-gpu/
+<code>-hwaccel cuda -hwaccel_output_format cuda</code>
 ===== H265 =====
@@ Zeile 15: / Zeile 54: @@
   * https://pcundvideo.de/videoqualitat-verbessern/?cn-reloaded=1
   * https://qastack.com.de/superuser/138331/using-ffmpeg-to-cut-up-video
+  * https://superuser.com/questions/1671831/parallel-transcoding-with-ffmpeg-on-m1-mac/1671915
+  * ffmpeg -i input4kvid.mp4 -vf scale=1920:1080 -c:a copy output1080vid.mp4 Convert 4k to 1080 (no change in codec)
+  * ffmpeg -i input.mp4 -c:v libx265 -vtag hvc1 -c:a copy output.mp4 Convert h.264 to h.265 (no change in resolution)
+  * ffmpeg -i input.mkv -c:v hevc_videotoolbox -vtag hvc1 -c:a copy output.mp4 MacOS HWaccel
+  * ffmpeg -i input.mp4 -c:v libx265 -vtag hvc1 -vf scale=1920:1080 -crf 20 -c:a copy output.mp4 Convert 4k(h.264) to 1080(h.265) Downscaling + Change in compression codec
+Film zu 1080p konvertieren:
+ffmpeg -i .mkv -c:v libx265 -vtag hvc1 -vf scale=1920:1080 -crf 20 -c:a copy .mp4
+<code>
+Options Explained
+-i input file name or file path
+-c:v libx265 -vtag hvc1 selecting compression. Default is libx264
+-vf scale=1920:1080 specifying output resolution
+-c:a copy copy audio as it is without any compression
+-preset slow ask compression algorithm to take more time & look for more areas for compression. Default is medium. Other options are faster, fast, medium, slow, slower
+-crf 20 Compression quality
+-crf 0 high-quality, low compression, large file
+-crf 23 default
+-crf 51 low-quality, high compression, small file
+</code>
+==== Export Bilder from Video ====
+<code>ffmpeg -i IMG_4483.MOV -vf fps=1/0.3 -s 2160x3840 "imageX_%05d.jpg"</code> Hochkant
+<code>ffmpeg -i MVI_6816.MP4 -vf fps=1/0.3 -s 3840x2160 "imageX_%05d.jpg"</code> Querformat IM VIDEO!!!
+==== Bilder nachträglich drehen ====
+<code>for file in *.JPG; do convert $file -rotate 90 rotated-$file; done</code>
+<code>for file in *.JPG; do convert $file -rotate 180 rotated-$file; done</code>
+<code>for file in *.JPG; do convert $file -rotate 270 rotated-$file; done</code>