For example to compute the CRC of the input, and store it in the file
@file{out.crc}:
@example
-ffmpeg -i INPUT -f crc out.crc
+avconv -i INPUT -f crc out.crc
@end example
You can print the CRC to stdout with the command:
@example
-ffmpeg -i INPUT -f crc -
+avconv -i INPUT -f crc -
@end example
-You can select the output format of each frame with @file{ffmpeg} by
+You can select the output format of each frame with @command{avconv} by
specifying the audio and video codec and format. For example to
compute the CRC of the input audio converted to PCM unsigned 8-bit
and the input video converted to MPEG-2 video, use the command:
@example
-ffmpeg -i INPUT -acodec pcm_u8 -vcodec mpeg2video -f crc -
+avconv -i INPUT -c:a pcm_u8 -c:v mpeg2video -f crc -
@end example
See also the @ref{framecrc} muxer.
For example to compute the CRC of each decoded frame in the input, and
store it in the file @file{out.crc}:
@example
-ffmpeg -i INPUT -f framecrc out.crc
+avconv -i INPUT -f framecrc out.crc
@end example
You can print the CRC of each decoded frame to stdout with the command:
@example
-ffmpeg -i INPUT -f framecrc -
+avconv -i INPUT -f framecrc -
@end example
-You can select the output format of each frame with @file{ffmpeg} by
+You can select the output format of each frame with @command{avconv} by
specifying the audio and video codec and format. For example, to
compute the CRC of each decoded input audio frame converted to PCM
unsigned 8-bit and of each decoded input video frame converted to
MPEG-2 video, use the command:
@example
-ffmpeg -i INPUT -acodec pcm_u8 -vcodec mpeg2video -f framecrc -
+avconv -i INPUT -c:a pcm_u8 -c:v mpeg2video -f framecrc -
@end example
See also the @ref{crc} muxer.
+@anchor{image2}
@section image2
Image file muxer.
form @file{img%-1.jpg}, @file{img%-2.jpg}, ..., @file{img%-10.jpg},
etc.
-The following example shows how to use @file{ffmpeg} for creating a
+The following example shows how to use @command{avconv} for creating a
sequence of files @file{img-001.jpeg}, @file{img-002.jpeg}, ...,
taking one image every second from the input video:
@example
-ffmpeg -i in.avi -r 1 -f image2 'img-%03d.jpeg'
+avconv -i in.avi -vsync 1 -r 1 -f image2 'img-%03d.jpeg'
@end example
-Note that with @file{ffmpeg}, if the format is not specified with the
+Note that with @command{avconv}, if the format is not specified with the
@code{-f} option and the output filename specifies an image file
format, the image2 muxer is automatically selected, so the previous
command can be written as:
@example
-ffmpeg -i in.avi -r 1 'img-%03d.jpeg'
+avconv -i in.avi -vsync 1 -r 1 'img-%03d.jpeg'
@end example
Note also that the pattern must not necessarily contain "%d" or
"%0@var{N}d", for example to create a single image file
@file{img.jpeg} from the input video you can employ the command:
@example
-ffmpeg -i in.avi -f image2 -vframes 1 img.jpeg
+avconv -i in.avi -f image2 -frames:v 1 img.jpeg
@end example
@section mpegts
@code{service_name} is "Service01".
@example
-ffmpeg -i file.mpg -acodec copy -vcodec copy \
+avconv -i file.mpg -c copy \
-mpegts_original_network_id 0x1122 \
-mpegts_transport_stream_id 0x3344 \
-mpegts_service_id 0x5566 \
This muxer does not generate any output file, it is mainly useful for
testing or benchmarking purposes.
-For example to benchmark decoding with @file{ffmpeg} you can use the
+For example to benchmark decoding with @command{avconv} you can use the
command:
@example
-ffmpeg -benchmark -i INPUT -f null out.null
+avconv -benchmark -i INPUT -f null out.null
@end example
Note that the above command does not read or write the @file{out.null}
-file, but specifying the output file is required by the @file{ffmpeg}
+file, but specifying the output file is required by the @command{avconv}
syntax.
Alternatively you can write the command as:
@example
-ffmpeg -benchmark -i INPUT -f null -
+avconv -benchmark -i INPUT -f null -
@end example
@section matroska
For example a 3D WebM clip can be created using the following command line:
@example
-ffmpeg -i sample_left_right_clip.mpg -an -vcodec libvpx -metadata STEREO_MODE=left_right -y stereo_clip.webm
+avconv -i sample_left_right_clip.mpg -an -c:v libvpx -metadata STEREO_MODE=left_right -y stereo_clip.webm
@end example
+@section segment
+
+Basic stream segmenter.
+
+The segmenter muxer outputs streams to a number of separate files of nearly
+fixed duration. Output filename pattern can be set in a fashion similar to
+@ref{image2}.
+
+Every segment starts with a video keyframe, if a video stream is present.
+The segment muxer works best with a single constant frame rate video.
+
+Optionally it can generate a flat list of the created segments, one segment
+per line.
+
+@table @option
+@item segment_format @var{format}
+Override the inner container format, by default it is guessed by the filename
+extension.
+@item segment_time @var{t}
+Set segment duration to @var{t} seconds.
+@item segment_list @var{name}
+Generate also a listfile named @var{name}.
+@item segment_list_size @var{size}
+Overwrite the listfile once it reaches @var{size} entries.
+@end table
+
+@example
+avconv -i in.mkv -c copy -map 0 -f segment -list out.list out%03d.nut
+@end example
+
+
@c man end MUXERS
projects / ffmpeg / blobdiff