Am 19.08.2013 04:49, schrieb Kyle:

Looks like this video has a webm version available, format 44. If it has 44, it should also have 43 if you need to play it on a smaller screen. Both mplayer and vlc should have the necessary codecs available to play the webm video. If you need the mp4 version, it would seem that you may be missing a codec, most likely the aac audio decoder. Try installing faad if you don't already have it. ~Kyle http://kyle.tk/

Hi, Kyle, faad2 was installed already. I didn't get the choice between mp4 and webm, however I just looked at the youtube player applet and the options of the mentioned extension. I will try the tool Rodrigo mentioned. Thank you !

Am 19.08.2013 15:41, schrieb Rodrigo Rivas:

On Sun, Aug 18, 2013 at 4:26 PM, Nelson Marambio <nelsonmarambio@gmx.de>wrote:

...

Hi, folks,

I downloaded a video file from YouTube which makes my players hang.

VLC neither plays audio or video but just remains as if no file was in the playlist (in fact it is).

When I start vlc (vlc -v) from console and try to play that video file vlc writes to the console

mp4 stream warning: unknown box type tft (incompletely loaded)

When I feed Google with this message I receive just similar results ('tft' seems to be individual to my problem) but not a solution.

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When I try to play the file with GNOME Mplayer it works but without the sound. I already checked in the preferences that I don't use the internal volume control of Mplayer.

Does anyone have a hint for me ? I am unsure if a codec is missing because VLC would tell me that ?!?

As Mplayer can decode the images I think the file is not corrupted. But what about the sound ?

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The video file is located here: http://www.youtube.com/watch?v=30ifeJZSQ64 (480p, file size is approx. 415 MByte)

I downloaded it with this Firefox extension: http://www.downloadhelper.net/

output vlc: http://pastebin.com/mhYDeGK4 output GNOME Mplayer: http://pastebin.com/yp6U6w9d

Thanks in advance, Nelson.

I cannot find the 480p MP4 version. I get:

$ youtube-dl -F http://www.youtube.com/watch?v=30ifeJZSQ64 Available formats: 35 : flv [480x854] 44 : webm [480x854] 34 : flv [360x640] 18 : mp4 [360x640] 43 : webm [360x640] 5 : flv [240x400] 17 : mp4 [144x176]

I tried downloading the format 18 and the 44 and they both play fine in my machine.

About your gnome-mplayer log, the curious thing is that is doesn't detect any audio stream at all. I'm using mplayer2, and I get all the audio information without problem:

$ mplayer --identify --frames=0 video.mp4 ... ID_AUDIO_ID=0 ID_AID_0_LANG=und [lavf] stream 1: audio (aac), -aid 0, -alang und ...

And about your VLC log, I think that more relevant than the "unknown box type tft" are the lines:

5. [0xb6a062e8] mp4 stream warning: unknown box type sidx (incompletely loaded) 6. 7. [about 200 times the line above]

My guess is that your file is simply corrupted. You can try downloading it again, but my advice is to use the excellent tool "youtube-dl".

OK, youtube-dl looks really more comfortable than the way I downloaded videos from youtube up to now. Thanks a lot for the hint ! I will download the video a second time, if the playback works without a problem on your machine and Kyle's, the fault has to be on my d/l. Thanks again to both of you ! Nelson.