[mythtv-users] slightly OT: Can dd not be used on mp4?

Jim Stichnoth stichnot at gmail.com
Tue Sep 24 13:48:29 UTC 2013


On Mon, Sep 23, 2013 at 11:39 AM, Jim Stichnoth <stichnot at gmail.com> wrote:

> On Mon, Sep 23, 2013 at 11:05 AM, Ian Evans <dheianevans at gmail.com> wrote:
>
>> On Mon, Sep 23, 2013 at 10:02 AM, Jim Stichnoth <stichnot at gmail.com>wrote:
>>
>>> On Sun, Sep 22, 2013 at 2:23 PM, Ian Evans <dheianevans at gmail.com>wrote:
>>>
>>>  On Sun, Sep 22, 2013 at 9:41 AM, Jim Stichnoth <stichnot at gmail.com>wrote:
>>>>
>>>>> Try copying the file from that 3-minute sample, or from the original
>>>>> recording, into your Video Gallery directory, then do a rescan from the
>>>>> Video Gallery, and see if the file plays correctly.  If it does, this
>>>>> suggests incorrect markup for the recording.  "mythutil --clearseektable
>>>>> --chanid xxx --starttime yyy" doesn't currently clear this particularly
>>>>> markup, so to continue testing, one would need to directly execute a DB
>>>>> query to clear the extra markup.
>>>>>
>>>>
>>>> I copied it over to Mythvideo and was able to seek/fast forward.
>>>>
>>>> OK, sounds like extra markup is getting in your way then.  If you're
>>> comfortable with using raw mysql commands, try this:
>>>
>>>   select * from recordedmarkup where chanid=xxx and starttime=yyy and
>>> type>=33;
>>>
>>
>>
>> chanid        starttime                  mark type data
>> 1019          2013-09-18 06:00:00 0        33 1026
>> 1019          2013-09-18 06:00:00 0        34 92396
>>
>> 33=duration, so it thinks the program is 1.026s long.  34=framecount, and
> 92K frames at 25fps is about an hour, so that seems plausible.  I bet this
> will fix the problem:
>

Even better, once you update to version v0.27-10-gd956105 or later, use:

  mythutil --clearseektable --chanid xxx --starttime yyy

This will remove the duration/framecount marks as well, and hopefully solve
this problem.

Jim
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