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--- util:multimedia:ffmpeg [2015/04/21 02:27] – external edit 127.0.0.1
+++ util:multimedia:ffmpeg [2024/02/20 10:38] (current) – Added section about MP3 encoding phil
@@ Line 51: / Line 51: @@
   * scale to yres of 480, keeping aspect ratio (-1)
   * drop audio input (-an)
+===== Concatenating Videos =====
+A quick and easy way to concat videos without re-encoding is to use the
+''concat'' format specifier:
+  $ cat mylist.txt
+  file '/path/to/file1'
+  file '/path/to/file2'
+  file '/path/to/file3'
+  $ ffmpeg -f concat -safe 0 -i mylist.txt -c copy output.mp4
+===== Encoding MP3s =====
+While this is about transcoding from FLAC to MP3, the same command should do
+for about any supported source format:
+  ffmpeg -i input.flac -q:a 0 -map a output.mp3
+By default, ffmpeg will write an ID3 version 2.4 section based on FLAC tags.
+Though since hardly any ID3-related tool seems to support them, it is advisable
+to pass ''-id3v2_version 3'' so version 2.3 is being used. To increase
+compatibility, ''-write_id3v1 1'' enables additional ID3 version 1 tags.
+===== Links =====
+[[https://stackoverflow.com/questions/7333232/how-to-concatenate-two-mp4-files-using-ffmpeg|How to concatenate two mp4 files on Stackoverflow]]