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Thread: Transcoder URL problem

  1. #1
    Join Date
    Jan 2013
    Posts
    27

    Default Transcoder URL problem

    How the player knows to plays this url="media_b643072_w427196576.abst" what is that .abst mean? else the url has been encoded?? if so where can i get the appropirate url? ...
    since there are 3 url in this xml how Wowza player(examples/SimpleVideoStreaming/clientOSMF/bin-release/SimpleOSMFPlayer.html) select the appropriate bitrate or url among the 3 url?


    This page http://wowzaaddress:1935/Transcoder/...l/manifest.f4m displays the following bitrate and URL:

    <manifest xmlns="http://ns.adobe.com/f4m/1.0">
    <id>livestream_all</id>
    <width>480</width>
    <height>360</height>
    <mimeType>video/mp4</mimeType>
    <streamType>live</streamType>
    <deliveryType>streaming</deliveryType>
    <bootstrapInfo id="bootstrap643072" profile="named" url="playlist_b643072_w427196576.abst"/>
    <media bootstrapInfoId="bootstrap643072" width="320" height="240" bitrate="628" url="media_b643072_w427196576.abst/">
    <metadata>
    AgAKb25NZXRhRGF0YQMABmF1dGhvcgIAAAAJY29weXJpZ2h0Ag AAAAtkZXNjcmlwdGlvbgIAAAAIa2V5d29yZHMCAAAABnJhdGlu ZwIAAAAFdGl0bGUCAAAACnByZXNldG5hbWUCAAZDdXN0b20ADG NyZWF0aW9uZGF0ZQIAGU1vbiBKYW4gMjggMTA6NDc6MTIgMjAx MwoAC3ZpZGVvZGV2aWNlAgAYUXVpY2tDYW0gT3JiaXQvU3BoZX JlIE1QAAlmcmFtZXJhdGUAQC4AAAAAAAAABXdpZHRoAEB0AAAA AAAAAAZoZWlnaHQAQG4AAAAAAAAADHZpZGVvY29kZWNpZAIABG F2YzEADXZpZGVvZGF0YXJhdGUAQH9AAAAAAAAACGF2Y2xldmVs AEA/AAAAAAAAAAphdmNwcm9maWxlAEBQgAAAAAAAABd2aWRlb2tleW ZyYW1lX2ZyZXF1ZW5jeQBAFAAAAAAAAAALYXVkaW9kZXZpY2UC AB9NaWNyb3Bob25lIChIaWdoIERlZmluaXRpb24gQXVkAA9hdW Rpb3NhbXBsZXJhdGUAQOWIgAAAAAAADWF1ZGlvY2hhbm5lbHMA QAAAAAAAAAAAEGF1ZGlvaW5wdXR2b2x1bWUAQFLAAAAAAAAADG F1ZGlvY29kZWNpZAIABC5tcDMADWF1ZGlvZGF0YXJhdGUAQGAA AAAAAAAACXRyYWNraW5mbwoAAAAAAAp0cmFuc2NvZGVyAwAKYX VkaW9Db2RlYwIACFBBU1NUSFJVAAxhdWRpb0JpdHJhdGUCABUk e1NvdXJjZUF1ZGlvQml0cmF0ZX0ACnZpZGVvQ29kZWMCAAhQQV NTVEhSVQAMdmlkZW9CaXRyYXRlAgAVJHtTb3VyY2VWaWRlb0Jp dHJhdGV9AAAJAAAJ
    </metadata>
    </media>
    <bootstrapInfo id="bootstrap981072" profile="named" url="playlist_b981072_w427196576.abst"/>
    <media bootstrapInfoId="bootstrap981072" width="480" height="360" bitrate="958" url="media_b981072_w427196576.abst/">
    <metadata>
    AgAKb25NZXRhRGF0YQMABmF1dGhvcgIAAAAJY29weXJpZ2h0Ag AAAAtkZXNjcmlwdGlvbgIAAAAIa2V5d29yZHMCAAAABnJhdGlu ZwIAAAAFdGl0bGUCAAAACnByZXNldG5hbWUCAAZDdXN0b20ADG NyZWF0aW9uZGF0ZQIAGU1vbiBKYW4gMjggMTA6NDc6MTIgMjAx MwoAC3ZpZGVvZGV2aWNlAgAYUXVpY2tDYW0gT3JiaXQvU3BoZX JlIE1QAAhhdmNsZXZlbABAPwAAAAAAAAAKYXZjcHJvZmlsZQBA UIAAAAAAAAAXdmlkZW9rZXlmcmFtZV9mcmVxdWVuY3kAQBQAAA AAAAAAC2F1ZGlvZGV2aWNlAgAfTWljcm9waG9uZSAoSGlnaCBE ZWZpbml0aW9uIEF1ZAAPYXVkaW9zYW1wbGVyYXRlAEDliIAAAA AAAA1hdWRpb2NoYW5uZWxzAEAAAAAAAAAAABBhdWRpb2lucHV0 dm9sdW1lAEBSwAAAAAAAAAxhdWRpb2NvZGVjaWQCAAQubXAzAA 1hdWRpb2RhdGFyYXRlAEBgAAAAAAAAAAl0cmFja2luZm8KAAAA AAAKdHJhbnNjb2RlcgMACmF1ZGlvQ29kZWMCAAhQQVNTVEhSVQ AMYXVkaW9CaXRyYXRlAgAVJHtTb3VyY2VBdWRpb0JpdHJhdGV9 AAp2aWRlb0NvZGVjAgAESDI2NAAMdmlkZW9CaXRyYXRlAEEp8K AAAAAAABN2aWRlb0ltcGxlbWVudGF0aW9uAgAHREVGQVVMVAAM dmlkZW9Qcm9maWxlAgAETUFJTgAVdmlkZW9GcmFtZVNpemVGaX RNb2RlAgAKZml0LWhlaWdodAATdmlkZW9GcmFtZVNpemVXaWR0 aABAhAAAAAAAAAAUdmlkZW9GcmFtZVNpemVIZWlnaHQAQHaAAA AAAAAAGXZpZGVvS2V5RnJhbWVGb2xsb3dTb3VyY2UBAQATdmlk ZW9FbmNvZGluZ1BhcmFtcwEAAAAJAAAJ
    </metadata>
    </media>
    <bootstrapInfo id="bootstrap331072" profile="named" url="playlist_b331072_w427196576.abst"/>
    <media bootstrapInfoId="bootstrap331072" width="214" height="160" bitrate="323" url="media_b331072_w427196576.abst/">
    <metadata>
    AgAKb25NZXRhRGF0YQMABmF1dGhvcgIAAAAJY29weXJpZ2h0Ag AAAAtkZXNjcmlwdGlvbgIAAAAIa2V5d29yZHMCAAAABnJhdGlu ZwIAAAAFdGl0bGUCAAAACnByZXNldG5hbWUCAAZDdXN0b20ADG NyZWF0aW9uZGF0ZQIAGU1vbiBKYW4gMjggMTA6NDc6MTIgMjAx MwoAC3ZpZGVvZGV2aWNlAgAYUXVpY2tDYW0gT3JiaXQvU3BoZX JlIE1QAAhhdmNsZXZlbABAPwAAAAAAAAAKYXZjcHJvZmlsZQBA UIAAAAAAAAAXdmlkZW9rZXlmcmFtZV9mcmVxdWVuY3kAQBQAAA AAAAAAC2F1ZGlvZGV2aWNlAgAfTWljcm9waG9uZSAoSGlnaCBE ZWZpbml0aW9uIEF1ZAAPYXVkaW9zYW1wbGVyYXRlAEDliIAAAA AAAA1hdWRpb2NoYW5uZWxzAEAAAAAAAAAAABBhdWRpb2lucHV0 dm9sdW1lAEBSwAAAAAAAAAxhdWRpb2NvZGVjaWQCAAQubXAzAA 1hdWRpb2RhdGFyYXRlAEBgAAAAAAAAAAl0cmFja2luZm8KAAAA AAAKdHJhbnNjb2RlcgMACmF1ZGlvQ29kZWMCAAhQQVNTVEhSVQ AMYXVkaW9CaXRyYXRlAgAVJHtTb3VyY2VBdWRpb0JpdHJhdGV9 AAp2aWRlb0NvZGVjAgAESDI2NAAMdmlkZW9CaXRyYXRlAEEIag AAAAAAABN2aWRlb0ltcGxlbWVudGF0aW9uAgAHREVGQVVMVAAM dmlkZW9Qcm9maWxlAgAIQkFTRUxJTkUAFXZpZGVvRnJhbWVTaX plRml0TW9kZQIACmZpdC1oZWlnaHQAE3ZpZGVvRnJhbWVTaXpl V2lkdGgAQHHAAAAAAAAAFHZpZGVvRnJhbWVTaXplSGVpZ2h0AE BkAAAAAAAAABl2aWRlb0tleUZyYW1lRm9sbG93U291cmNlAQEA E3ZpZGVvRW5jb2RpbmdQYXJhbXMBAAAACQAACQ==
    </metadata>
    </media>
    </manifest>

  2. #2
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    The .abst is a video/audio chunk for smoothstreaming to Silverlight player. As I understand it, the player measures bandwidth and decide which rendition to play using the chunks, knowing from the embedded info what the size and duration of the chunk is and how long it takes the player to download, it can easily figure out what bandwidth.

    Richard

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