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Zeqadious

Member

From: New York, USA

Registered: 2007-10-15

Posts: 55

Website

[SOLVED] [ffmpeg] Possible bug in libvpx (webm)

I have been converting a bunch of my video files into webm for hosting and today when I did my normal daily upgrade routine, it picked up ffmpeg and x264.  When I went to do my normal conversion I got an error from ffmpeg.  Upon downgrading ffmpeg and x264 the process again works perfect.

I attempted to try libvpx git and see if that would fix the problem, but ffmpeg would then need recompilation anyway.

[error]
[libvpx @ 0xf387e0] Failed to initialize encoder: Invalid parameter
[libvpx @ 0xf387e0]   Additional information: g_lag_in_frames out of range [..25]
Output #0, webm, to '2011.02.17-Algaloth.avi.webm':
    Stream #0:0(eng): Video: vp8, yuv420p, 1680x1050 [SAR 1:1 DAR 8:5], q=-1--1, 200 kb/s, 90k tbn, 30 tbc (default)
Stream mapping:
  Stream #0.0 -> #0.0 (h264 -> libvpx)
Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height
[/error]

If you use libvpx currently in ffmpeg beware possible issues with testing ffmpeg [20111105-1] and x264 [20111030-1].  I haven't opened a bug report as yet.  If anyone can confirm this as an actual bug and/or post a fix a bug report would be easy to create.

Cheers

Last edited by Zeqadious (2011-11-08 16:46:40)

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"Till shade is gone, till water is gone, into the Shadow with teeth bared, screaming defiance with the last breath, to spit in Sightblinder's eye on the Last Day"

wonder

Developer

From: Bucharest, Romania

Registered: 2006-07-05

Posts: 5,941

Website

Re: [SOLVED] [ffmpeg] Possible bug in libvpx (webm)

you should let upstream (ffmpeg) know about that. NOTE that our ffmpeg 20111105-1 is a snapshot from master at that date.

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Give what you have. To someone, it may be better than you dare to think.

Zeqadious

Member

From: New York, USA

Registered: 2007-10-15

Posts: 55

Website

Re: [SOLVED] [ffmpeg] Possible bug in libvpx (webm)

The latest ffmpeg now in testing [20111108-1] works properly.

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"Till shade is gone, till water is gone, into the Shadow with teeth bared, screaming defiance with the last breath, to spit in Sightblinder's eye on the Last Day"