Changes between Version 19 and Version 20 of DirectShow


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Timestamp:
Mar 22, 2014, 12:51:13 AM (5 years ago)
Author:
rogerdpack
Comment:

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  • DirectShow

    v19 v20  
    6868You can specify "-vcodec copy" to [http://ffmpeg.org/ffmpeg.html#Stream-copy stream copy] the video instead of re-encoding, if you can receive the data in some type of pre-encoded format, like mjpeg in this instance.
    6969
    70 Also this note that "The input string is in the format video=<video device name>:audio=<audio device name>. It is possible to have two separate inputs (like -f dshow -i audio=foo -f dshow -i video=bar) but my limited tests had shown a better synchronism when both were used in the same input."
     70Also this note [http://ffmpeg.zeranoe.com/forum/viewtopic.php?f=3&t=27 that] the input string is in the format video=<video device name>:audio=<audio device name>. It is possible to have two separate inputs (like -f dshow -i audio=foo -f dshow -i video=bar) but limited tests had shown a better synchronism when both were used in the same input.
    7171
    72 {{{#!comment
    73 Note from llogan: Where is the above note from? Why is it in quotes?
    74 }}}
     72Also note that you can only at most have 2 streams at once (one audio and one video).  Ask if you want this improved.
    7573
    76 See the [http://ffmpeg.org/ffmpeg-devices.html#dshow FFmpeg dshow input device documentation] for a list of more dshow options you can specify. For instance you can decrease latency on audio devices, or specify a video by "index" if two have the same name displayed, etc.
     74See the [http://ffmpeg.org/ffmpeg-devices.html#dshow FFmpeg dshow input device documentation] for a list of more dshow options you can specify. For instance you can decrease latency on audio devices, or specify a video by "index" if two have the same name, etc.
    7775
    7876== Buffering ==