[mythtv-users] Video file with poor playback on ION board

[Richard Morton]

On 23 January 2011 13:39, Phil Wild <philwild at gmail.com> wrote:
> On 23 January 2011 21:13, Richard Morton <richard.e.morton at gmail.com> wrote:
>> An easy method is Play the file in VLC and go to Codec Information
>> from the menu to see how it is encoded. My guess is that the file is
>> an HD DIVX/XVID/MPEG4part2 and this codec is not supported by
>> graphics/hardware acceleration. Only MPEG2 and H264 are supported by
>> the ION1 chipset. Or the file is H264 but it is using options in the
>> spec which are not supported in hardware.
>>
>
> Under codec details I see
>
> Steam 0
>   Type: Video
>   Codec: avc1
>   Language: English
>   Resolution: 1280x720
>   Display resolution: 1280x720
>   Frame rate: 23.976023
>
> Cheers

http://en.wikipedia.org/wiki/AVC1

in which case it was likely the options used to encode are not
supported by the hardware and it has to resort to software decoding on
the CPU and the CPU is not powerful enough for the options used and
the bitrate.