Differences

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--- ffmpeg [2013/06/28 15:14]
beandog
+++ ffmpeg [2019/07/08 18:47]
beandog
@@ Line 1: / Line 1: @@
 ====== ffmpeg ======
+  * [[ffplay]]
+  * [[ffprobe]]
+  * [[frameinfo]]
+  * [[framecount]]
+  * [[detelecine]]
+  * [[yadif]]
+  * [[bwdif]]
+  * [[Subtitles]]
+  * [[https://en.wikibooks.org/wiki/FFMPEG_An_Intermediate_Guide]]
+  * [[http://wiki.indie-it.com/wiki/FFmpeg_DVD]] - lots of good, detailed ffmpeg examples
+To do a clean MPG [[dvd_copy|copy]] from a DVD:
+<code>
+dvd_copy -o - | ffmpeg -i - -map 0:v -map 0:a -map 0:s -codec copy -f vob dvd_copy.mpg
+</code>
+Or into Matroska:
+<code>
+dvd_copy -o - | ffmpeg -fflags +genpts -i - -codec copy dvd_copy.mkv
+</code>
+** Adding Chapters **
+  * See [[https://ffmpeg.org/ffmpeg-formats.html#Metadata-1]]
+Create a file with the metadata. This example here has chapters at each minute mark.
+<code>
+;FFMETADATA1
+[CHAPTER]
+TIMEBASE=1/1000
+START=0
+END=60000
+title=Chapter 1
+[CHAPTER]
+TIMEBASE=1/1000
+START=60000
+END=120000
+title=Chapter 2
+[CHAPTER]
+TIMEBASE=1/1000
+START=120000
+END=180000
+title=Chapter 3
+[CHAPTER]
+TIMEBASE=1/1000
+START=180000
+END=240000
+title=Chapter 4
+</code>
+Use the file as input with the encode, and map the metadata:
+<code>
+ffmpeg -i video.mpg -i chapters.txt -map_metadata 1 video.mkv
+</code>
+You can extract the metadata as well:
+<code>
+ffmpeg -i dvd_copy.mkv -f ffmetadata metadata.txt
+</code>
+** Display stream info in JSON **
+<code>
+ffprobe -i dvd_copy.mpg -hide_banner -probesize 67108864 -analyzeduration 60000000 -show_format -of json -show_streams 2> /dev/null
+</code>
 === archives: Wrong audio track by default ===
@@ Line 53: / Line 125: @@
 If you looked at a widescreen and a fullscreen video, the original display size is actually the same: 720x480.  They are just stretched differently based on the aspect ratio.
+=== archives: Convert image to video ===
+<code>
+ffmpeg -i snapshot.jpg -sameq -s 720x480 video.mp4
+</code>
+That will create a one frame video.  Then I copy it to about 200 frames to make a 6 second video.
+Avidemux has problems opening a single frame file, so create a long MP4 before trying to create a VOB to burn to DVD.
+=== archives: PSP Format w/ffmpeg ===
+Finally found a working solution:
+<code>ffmpeg -y -i 101._The_Force_Phantom.mkv -s 320x240 -ar 24000 -r 29.97 -f psp -title "The Force Phantom" M4V12345.MP4</code>
+You *can* encode to 480x272 (or 270) and it will playback fine, but for some reason the title tag won't be read anymore.  Seems to be a PSP bug, since a video I downloaded (SWTFU stuff) also won't display it.
+Also, MV1234.MP4 is the old supported format.  My PSP (firmware >5) supports "movie.mp4" naming scheme, as well as folder structures just fine!

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