Differences

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--- ffmpeg_notes [2021-06-16 14:33] – [video -> image sequence] nik
+++ ffmpeg_notes [2023-08-27 12:27] (current) – [general exploration] nik
@@ Line 1: / Line 1: @@
 ==== Ffmpeg - various notes ====
+==== general exploration ====
+[[https://ffmpeg.lav.io/|FFmpeg Explorer]] is a tool to help you explore FFmpeg filters.
 ==== add audio track to a video ====
@@ Line 31: / Line 35: @@
 ====image sequence  → video====
-''ffmpeg -r 1/5 -i %05d.jpg -c:v libx265 -vf "fps=25" out.mkv''
+''ffmpeg -i %05d.jpg -c:v libx265 -r 25 out.mkv''
 ==== concat ====
-a list of files (e.g. named files.txt)\\
+create a list of files (e.g. named files.txt)\\
 ''file 'dust_and_shadow_28min.mp4' ''\\
 ''file 'dust_and_shadow_black.mp4' ''\\
@@ Line 41: / Line 45: @@
 ''ffmpeg -f concat -i files.txt -c copy dust_and_shadow_30min.mp4''
-also -> https://stackoverflow.com/questions/7333232/how-to-concatenate-two-mp4-files-using-ffmpeg
+alternatively, partial automation...\\
+''ls *.mp4 | while read each; do echo "file '$each'" >> files.txt; done\\
+ffmpeg -f concat -i files.txt -c copy 000-qualia-RN101.mkv''
+also -> https://stackoverflow.com/questions/7333232/how-to-concatenate-two-mp4-files-using-ffmpeg
 ====ffmpeg filters  ====