FFmpeg - Revision history

Leo at 00:28, 15 June 2022

2022-06-15T00:28:41Z

← Older revision		Revision as of 00:28, 15 June 2022
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	Empty files will cause {{code\|ffmpeg}} to stop processing additional files. Run {{code\|find ./slideshow -size 0 -print0 \| xargs -0 rm --}} to delete zero-sized files to prevent this from happening.		Empty files will cause {{code\|ffmpeg}} to stop processing additional files. Run {{code\|find ./slideshow -size 0 -print0 \| xargs -0 rm --}} to delete zero-sized files to prevent this from happening.

			=== RTMP stream to segmented video files ===
			Record a RTMP stream into multiple segmented files could be useful in a surveillance application.

			I'm currently using the following <code>ffmpeg</code> command in a Docker container to record a live video stream from my security cameras and saving them into 15 minute segments. The filename is then named by the date and time of the recording. This command will terminate when the segment is complete. As a result, you'll need to put this command within a loop of some sort if you wish to record indefinitely.
			{{Highlight
			\| code = # ffmpeg -rtsp_transport tcp \
			-y \
			-stimeout 15000000 \
			-i "$RTMP_STREAM_URL" \
			-c copy \
			-f segment \
			-segment_time "$VIDEO_SEGMENT_TIME" \
			-reset_timestamps 1 \
			-segment_atclocktime 1 \
			-strftime 1 \
			"$dir/%Y-%m-%d_%H-%M-%S.mp4" \
			-loglevel error
			\| lang = terminal
			}}
			The <code>-y</code> option overwrites the file in the event the filename already exists. The RTMP URL should be using the RTMP protocol, such as <code>rtmp://rtsp-server:1935/garage</code>.

			The <code>stimeout</code> value is the socket timeout value. If the video stream for whatever reason hangs and exceeds this value, the recording will be terminated. The value is given in microseconds. In this example, 15'000'000 is equal to 15 seconds. Settings this value too low (eg. 1 second) could result in the stream periodically stopping due to Wi-Fi issues with the video stream resulting in short segments being generated.

			The segment time can be given as seconds (eg. <code>900</code>) or as a <code>HH:MM:SS</code> timestamp (eg. <code>00:15:00</code>). <code>segment_atclocktime</code> ensures the segment's start/stop times line up with the hour.

			Use <code>strftime 1</code> to enable naming the file with strftime. The end result looks something similar to: <code>2022-06-14_16-30-01.mp4</code>.

	== Issues ==		== Issues ==

Leo: Text replacement - "Category:Linux{{Navbox Linux}}" to "{{Navbox Linux}}Category:Linux"

2019-09-01T06:20:43Z

Text replacement - "Category:Linux{{Navbox Linux}}" to "{{Navbox Linux}}Category:Linux"

← Older revision		Revision as of 06:20, 1 September 2019
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	Copying DASH video (via {{code\|-vcodec copy}}) using versions older than 0.10 will result in an empty file because it is unable to read the video contents.		Copying DASH video (via {{code\|-vcodec copy}}) using versions older than 0.10 will result in an empty file because it is unable to read the video contents.

	[[Category:Linux]]~~{{Navbox Linux}}~~		{{Navbox Linux}}[[Category:Linux]]
	[[Category:LinuxUtilities]]		[[Category:LinuxUtilities]]

Leo: Text replacement - "{{Navbox Linux}}{{Navbox Linux}}" to "{{Navbox Linux}}"

2019-09-01T05:10:58Z

Text replacement - "{{Navbox Linux}}{{Navbox Linux}}" to "{{Navbox Linux}}"

← Older revision		Revision as of 05:10, 1 September 2019
Line 46:		Line 46:
	Copying DASH video (via {{code\|-vcodec copy}}) using versions older than 0.10 will result in an empty file because it is unable to read the video contents.		Copying DASH video (via {{code\|-vcodec copy}}) using versions older than 0.10 will result in an empty file because it is unable to read the video contents.

	[[Category:Linux]]~~{{Navbox Linux}}~~{{Navbox Linux}}		[[Category:Linux]]{{Navbox Linux}}
	[[Category:LinuxUtilities]]		[[Category:LinuxUtilities]]

Leo: Text replacement - "Category:Linux" to "Category:Linux{{Navbox Linux}}"

2019-09-01T05:08:53Z

Text replacement - "Category:Linux" to "Category:Linux{{Navbox Linux}}"

← Older revision		Revision as of 05:08, 1 September 2019
Line 46:		Line 46:
	Copying DASH video (via {{code\|-vcodec copy}}) using versions older than 0.10 will result in an empty file because it is unable to read the video contents.		Copying DASH video (via {{code\|-vcodec copy}}) using versions older than 0.10 will result in an empty file because it is unable to read the video contents.

	[[Category:Linux]]{{Navbox Linux}}		[[Category:Linux]]{{Navbox Linux}}{{Navbox Linux}}
	[[Category:LinuxUtilities]]		[[Category:LinuxUtilities]]

Leo: Text replacement - " {{Navbox Linux}}" to ""

2019-09-01T04:55:45Z

Text replacement - " {{Navbox Linux}}" to ""

← Older revision		Revision as of 04:55, 1 September 2019
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	[[Category:Linux]]{{Navbox Linux}}		[[Category:Linux]]{{Navbox Linux}}
	[[Category:LinuxUtilities]]		[[Category:LinuxUtilities]]
	~~{{Navbox Linux}}~~

Leo: Text replacement - "Category:Linux " to "Category:Linux{{Navbox Linux}} "

2019-09-01T04:01:10Z

Text replacement - "Category:Linux " to "Category:Linux{{Navbox Linux}} "

← Older revision		Revision as of 04:01, 1 September 2019
Line 46:		Line 46:
	Copying DASH video (via {{code\|-vcodec copy}}) using versions older than 0.10 will result in an empty file because it is unable to read the video contents.		Copying DASH video (via {{code\|-vcodec copy}}) using versions older than 0.10 will result in an empty file because it is unable to read the video contents.

	[[Category:Linux]]		[[Category:Linux]]{{Navbox Linux}}
	[[Category:LinuxUtilities]]		[[Category:LinuxUtilities]]
	{{Navbox Linux}}		{{Navbox Linux}}

Leo: Leo moved page Ffmpeg to FFmpeg without leaving a redirect: name casing

2019-07-21T23:50:26Z

Leo moved page Ffmpeg to FFmpeg without leaving a redirect: name casing

← Older revision	Revision as of 23:50, 21 July 2019
(No difference)

Leo: /* Slideshow to Video */

2019-07-21T23:49:26Z

Slideshow to Video

← Older revision		Revision as of 23:49, 21 July 2019
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	-c:v libx264 \		-c:v libx264 \
	-vf "fps=25,format=yuv420p" \		-vf "fps=25,format=yuv420p" \
	-threads 8		-threads 8 \
	output.mp4		output.mp4
	}}		}}

Leo: /* Slideshow to Video */

2019-07-21T23:49:17Z

Slideshow to Video

← Older revision		Revision as of 23:49, 21 July 2019
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	{{highlight\|lang=terminal\|code=		{{highlight\|lang=terminal\|code=
	## Remove any empty image files (explained below)		## Remove any empty image files (explained below)
	# find ./images -size 0 -print0 \| xargs -0 rm --		# find ./images -size 0 -print0 {{!}} xargs -0 rm --

	## Process images to 25fps with 8 CPU cores		## Process images to 25fps with 8 CPU cores

Leo at 23:49, 21 July 2019

2019-07-21T23:49:02Z

@@ Line 1: / Line 1: @@
-== Merging mp4 and m4a ==
+== Usage ==
 Using {{code|ffmpeg}} you can combine the two together:
 {{highlight|lang=terminal|code=
@@ Line 5: / Line 7: @@
 }}
-== Extracting a video section ==
+=== Extracting a video section ===
 To extract a video section:
 {{highlight|lang=terminal|code=
@@ Line 19: / Line 21: @@
 | The length of the video in HH:MM:SS
 |}
 == Issues ==