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@ -797,6 +797,37 @@ files. |
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@item http_user_agent |
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Override User-Agent field in HTTP header. Applicable only for HTTP output. |
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@item var_stream_map |
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Map string which specifies how to group the audio, video and subtitle streams |
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into different variant streams. The variant stream groups are separated |
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by space. |
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Expected string format is like this "a:0,v:0 a:1,v:1 ....". Here a:, v:, s: are |
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the keys to specify audio, video and subtitle streams respectively. |
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Allowed values are 0 to 9 (limited just based on practical usage). |
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@example |
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ffmpeg -re -i in.ts -b:v:0 1000k -b:v:1 256k -b:a:0 64k -b:a:1 32k \ |
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-map 0:v -map 0:a -map 0:v -map 0:a -f hls -var_stream_map "v:0,a:0 v:1,a:1" \ |
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http://example.com/live/out.m3u8 |
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@end example |
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This example creates two hls variant streams. The first variant stream will |
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contain video stream of bitrate 1000k and audio stream of bitrate 64k and the |
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second variant stream will contain video stream of bitrate 256k and audio |
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stream of bitrate 32k. Here, two media playlist with file names out_1.m3u8 and |
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out_2.m3u8 will be created. |
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@example |
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ffmpeg -re -i in.ts -b:v:0 1000k -b:v:1 256k -b:a:0 64k \ |
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-map 0:v -map 0:a -map 0:v -f hls -var_stream_map "v:0 a:0 v:1" \ |
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http://example.com/live/out.m3u8 |
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@end example |
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This example creates three hls variant streams. The first variant stream will |
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be a video only stream with video bitrate 1000k, the second variant stream will |
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be an audio only stream with bitrate 64k and the third variant stream will be a |
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video only stream with bitrate 256k. Here, three media playlist with file names |
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out_1.m3u8, out_2.m3u8 and out_3.m3u8 will be created. |
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By default, a single hls variant containing all the encoded streams is created. |
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@end table |
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@anchor{ico} |
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