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Updated FFMPEG page #2198

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Updated FFMPEG page #2198

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18548ab
Updated FFMPEG doc
praveen-pravi6B Oct 7, 2025
5258f0a
Stream Selection add in ffmpeg (-map arg)
praveen-pravi6B Oct 8, 2025
9f3ef41
Added -pix_fmt and -crf value
praveen-pravi6B Oct 8, 2025
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17 changes: 17 additions & 0 deletions ffmpeg.md
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,8 @@ category: CLI
-codecs # list codecs
-c:v # video codec (-vcodec) - 'copy' to copy stream
-c:a # audio codec (-acodec)
-ss # Stream Seek (90 = 1min 30sec, 01:00:00 = 1hr)
-t # Time Duration (10 for first 10 sec)
```

```bash
Expand All @@ -29,6 +31,8 @@ category: CLI
-r RATE # frame rate per sec
-s WIDTHxHEIGHT # frame size
-vn # no video
-pix_fmt FORMAT # Pixel Format (yuv420p, yuv420p10le)
-crf LEVEL # Constant rate factor (0-51 lower value for high quality)
```

### Audio
Expand All @@ -48,6 +52,19 @@ category: CLI
```bash
ffmpeg -i foo.mp3 -ac 1 -ab 128000 -f mp4 -acodec libfaac -y target.m4r
```
### Stream Selection in ffmpeg

```bash
ffmpeg -i input1.mp4 -i input2.mp4 -map 0:v:0 -map 1:a:0 output.mp4
# To create output file with video from 1st file & audio from 2nd file.

ffmpeg -i input1.mp4 -i input2.mp3 -map 0:v -map 1:a output.mkv
# To create output file with all video streams from 1st file & audio streams from 2nd file.

# -map [INPUT_FILE_INDEX]:[STREAM_SPECIFIER]
# -map [INPUT_FILE_INDEX]:[STREAM_SPECIFIER]:[STREAM_INDEX]
```


### To web

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