Hi,
I don't know where to start to resolve this problem and guessed maybe
this is a good place to start. If not, please point me in the right
direction.
Our ultimate goal is to stream 8k resolution video using sage (see
www.sagecommons.org).
- We first used ffmpeg to convert a 4k resolution video file to yuv
format, and we were able to view it with ffplay, mplayer, and crcview
(an in house program).
- We then used ffmpeg to convert/resample the same 4k resolution video
file to yuv/8k resolution; the conversion completed without error.
- When trying to view the resulting yuv/8k resolution file all three
viewer programs failed with the same X Error. For example, here is the
output from ffplay:
ffplay -i Lupe.8k.yuv -s 8192x4320 -pix_fmt yuv420p -x 1920 -y 1080
ffplay version 0.8, Copyright (c) 2003-2011 the FFmpeg developers
built on Nov 30 2011 13:01:22 with gcc 4.5.1 20101208
[gcc-4_5-branch revision 167585]
configuration:
libavutil 51. 9. 1 / 51. 9. 1
libavcodec 53. 7. 0 / 53. 7. 0
libavformat 53. 4. 0 / 53. 4. 0
libavdevice 53. 1. 1 / 53. 1. 1
libavfilter 2. 23. 0 / 2. 23. 0
libswscale 2. 0. 0 / 2. 0. 0
[rawvideo @ 0x129d740] Estimating duration from bitrate, this may be
inaccurate
Input #0, rawvideo, from 'Lupe.8k.yuv':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0.0: Video: rawvideo, yuv420p, 8192x4320, 25 tbr, 25
tbn, 25 tbc
X Error of failed request: BadLength (poly request too large or
internal Xlib length error)
Major opcode of failed request: 132 (XVideo)
Minor opcode of failed request: 18 ()
Serial number of failed request: 23
Current serial number in output stream: 24
In case it matters, we are using openSuse 11.4 64 bit linux, on an ASUS
P6T7 WS Supercomputer motherboard, with 12 G RAM, and a ASUS GTX590
video card.
My guess is the 8k resolution video format is exceeding a buffer size
limit somewhere, either in software, or maybe on the video card.
Is there a way to find out what buffers are affected and is there a way
to overcome these limits?
Thanks for any assistance you can provide,
Don
_______________________________________________
xorg@lists.freedesktop.org: X.Org support
Archives: http://lists.freedesktop.org/archives/xorg
Info: http://lists.freedesktop.org/mailman/listinfo/xorg
Your subscription address: arch...@mail-archive.com
