FFmpeg tips Tue, Jan 22, 2019

util tips command-line ffmpeg

A complete, cross-platform solution to record, convert and stream audio and video. https://ffmpeg.org/

Concatenating video files

ffmpeg -f concat -i list.txt -c copy output.mp4

list.txt

file /tmp/file1.mp4
file /tmp/file2.mp4
file /tmp/file3.mp4
file /tmp/file4.mp4

Listing split files and merging them

 ls -v *.mp4  | awk '{print "file "$1}' > list.txt && ffmpeg -f concat -i list.txt -c copy output.mp4

Cutting video

00:00:00 ~ 00:00:05

fmpeg -i sample.mp4 -vcodec copy -acodec copy -ss 00:00:00 -to 00:00:05 cut.mp4

00:00:03 ~ 00:00:19

ffmpeg -i sample.mp4 -ss 00:00:03 -t 00:00:16 -async 1 cut2.mp4

Download RTSP stream

ffmpeg -i rtsp://ID:PASSWORD@IP -acodec copy -vcodec copy /path/to/file

List supported devices

DirecShow: https://trac.ffmpeg.org/wiki/DirectShow

$ ffmpeg -y -f vfwcap -i list
[vfwcap @ 00000226d24d94c0] Driver 0
[vfwcap @ 00000226d24d94c0]  Microsoft WDM Image Capture (Win32)
[vfwcap @ 00000226d24d94c0]  Version:  10.0.17763.1

$ ffmpeg -list_devices true -f dshow -i dummy
---
[dshow @ 000002a00a8395c0] DirectShow video devices (some may be both video and audio devices)
[dshow @ 000002a00a8395c0]  "720p HD Camera"
[dshow @ 000002a00a8395c0]     Alternative name "@device_pnp_\\?\usb#vid_2232&pid_1083&mi_00#6&5f134b1&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
[dshow @ 000002a00a8395c0] DirectShow audio devices
[dshow @ 000002a00a8395c0]  "Blablabla(Realtek High Definition Audio(SST))"
[dshow @ 000002a00a8395c0]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{57219422-ACFD-4807-AB0C-F531287BA5E6}"

List audio device

ffmpeg -f dshow -list_options true -i audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{57219422-ACFD-4807-AB0C-F531287BA5E6}"

List video device

ffmpeg -f dshow -list_options true -i video="720p HD Camera"
ffmpeg -f dshow -list_options true -i video="@device_pnp_\\?\usb#vid_2232&pid_1083&mi_00#6&5f134b1&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"

Capture audio

ffmpeg -f dshow -i audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{57219422-ACFD-4807-AB0C-F531287BA5E6}" output.mp3

Capture video

ffmpeg -f vfwcap -r 15 -i 0 out.mp4
ffmpeg -f vfwcap -r 15 -i video="720p HD Camera" out.mp4

Video to separated files Muxer

ffmpeg -f vfwcap -framerate 15 -i 0 -c:v libx264 -g 15 -c:a aac -preset veryfast -segment_time 2 -segment_wrap 24 -f segment live%03d.ts

Video & Audio to separated files

ffmpeg -f vfwcap -i video="720p HD Camera":audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{57219422-ACFD-4807-AB0C-F531287BA5E6}" -framerate 15 -c:v libx264 -g 15 -c:a aac -preset veryfast -segment_time 2 -segment_wrap 24 -f segment live%03d.ts

IP Camera to RTSP Stream

Client (Receiver)

ffplay -rtsp_flags listen rtsp://localhost:8888/live.sdp?tcp

Server (Sender)

ffmpeg -f vfwcap -r 15 -i 0 -f rtsp -rtsp_transport tcp rtsp://localhost:8888/live.sdp

Save RTSP stream to mp4 files

ffmpeg
    -v error
    -rtsp_transport tcp
    -probesize 500k
    -analyzeduration 1500000
    -i rtsp://URL
    -map 0:0
    -flags:v global_header
    -bsf:v dump_extra
    -c copy
    -fflags +igndts
    -preset veryfast
    -segment_time 2
    -segment_wrap 24
    -f segment live%03d.ts

VXG FFMpeg Option

ffmpeg
-v error
-rtsp_transport tcp
-probesize 500k
-analyzeduration 1500000
-i rtsp://URL
-map 0:0
-flags:v global_header
-bsf:v dump_extra
-c copy
-fflags +igndts
-f flv rtmp://URL

RTSP-Stream options

ffmpeg
-y
-fflags nobuffer
-rtsp_transport tcp
-i rtsp://URL
-vsync 0
-copyts
-vcodec copy
-movflags frag_keyframe+empty_moov
-an
-hls_flags append_list
-f hls
-segment_list_flags live
-hls_time 1
-hls_list_size 3
-hls_segment_filename ./videos/a8002e0a-5453-442f-8f34-b17dd49b213f/%d.ts ./videos/a8002e0a-5453-442f-8f34-b17dd49b213f/index.m3u8

Re-stream

Streaming MP4 to RTMP

ffmpeg
    -re
    -i sample.mp4
    -c copy
    -f flv rtmp://localhost/movie

Streaming RTSP to RTMP

ffmpeg
    -re
    -rtsp_transport tcp
    -i rtsp://URL
    -c copy
    -f flv rtmp://localhost/movie

*.ts files to m3u8

cp /data/live/1/live*.ts .
find . -type f -name "live*.ts" | sort | awk -F/ '{print "file " $2}'> list.txt
ffmpeg -f concat -safe 0 -i list.txt -c copy -f ssegment -segment_list index.m3u8 -segment_list_flags +live -segment_time 60 out%03d.ts
ffmpeg -f concat -safe 0 -i list.txt -c copy -f ssegment -segment_list index.m3u8 -segment_list_flags +live -segment_time 10 media%d.ts