rtmpdump 命令

常用示例

说明

rtmpdump downloads media streams using the Real-Time Messaging Protocol (RTMP), which was originally developed by Adobe for Flash-based streaming. It connects to RTMP servers and saves the stream data to a local file, supporting both live broadcasts and on-demand video content. The tool handles the full RTMP handshake and protocol negotiation, including SWF (Shockwave Flash) verification when servers require it. RTMP URLs consist of a server address, application path, and playpath, which may need to be specified separately. For live streams, the -v flag enables live mode where recording continues until the stream ends or the user interrupts. Interrupted downloads can be resumed with the --resume flag, which is particularly useful for long recordings over unreliable connections. The tool outputs FLV (Flash Video) format by default, which can be converted to other formats using tools like ffmpeg.

参数

-r _URL_, --rtmp _URL_

RTMP URL of the stream to download.

-o _FILE_, --flv _FILE_

Output file name. If not specified, streams to stdout.

-y _PATH_, --playpath _PATH_

Override the playpath parsed from the RTMP URL.

-a _APP_, --app _APP_

Name of application to connect to on the RTMP server.

-v, --live

Specify that the media is a live stream. No resuming or seeking is possible.

-W _URL_, --swfVfy _URL_

URL of the SWF player. Hash and size are computed automatically.

-s _URL_, --swfUrl _URL_

URL of the SWF player for the media. Required by some servers for verification.

--resume

Resume an incomplete download.

-T _TOKEN_, --token _TOKEN_

Key for SecureToken response.

--timeout _SECS_

Timeout the session after SECS seconds without receiving data.

-n _HOST_, --host _HOST_

Override the hostname in the RTMP URL.

-c _PORT_, --port _PORT_

Override the port number in the RTMP URL.

--hashes

Display a hash mark for each 1% of progress.

-q, --quiet

Suppress all command output.

-V, --verbose

Verbose output.

-z, --debug

Debug level output with hex dumps of all packet data.