Changes between Version 19 and Version 20 of DirectShow
- Timestamp:
- Mar 22, 2014, 12:51:13 AM (6 years ago)
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DirectShow
v19 v20 68 68 You 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. 69 69 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."70 Also 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. 71 71 72 {{{#!comment 73 Note from llogan: Where is the above note from? Why is it in quotes? 74 }}} 72 Also note that you can only at most have 2 streams at once (one audio and one video). Ask if you want this improved. 75 73 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.74 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, etc. 77 75 78 76 == Buffering ==