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

Mark Kendall mark.kendall at gmail.com
Sun Jan 23 14:43:01 UTC 2011


On 23 January 2011 22:02, Phil Wild <philwild at gmail.com> wrote:
> On 23 January 2011 21:49, Richard Morton <richard.e.morton at gmail.com> wrote:
>> 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.
>> _______________________________________________
>
> How do I determine what options were used?
> What is the best way of transcoding this into something that is
> playable with minimal impact on quality?

Before you go down that route, just post the output of 'mythfrontend
-v playback'. An encoding issue is probably the least likely of many
potential playback problems.

regards

Mark


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