[mythtv-users] Seeking driving me nuts

Sasha Z kleptophobiac at gmail.com
Tue Jul 5 14:06:26 EDT 2005

I managed to break the database, but I've got it fixed now.

In any case, that doesn't help the erratic ffwd and rwd. Skipping is
right on target, except when trying to skip back at the beginning of a

Here's my capture "chain":
- Capture at 7.5mbps mpeg2, 48KHz mpeg2 audio
- Commflag
- Transcode to mpeg4 (2600 kbps, 1.1GB per hour for 480x480 recordings
with 44.1KHz MP3 audio, all four HQ options set)

The erratic behavior occurs when pressing the play button... hitting
ffwd while rewinding (and therefore going back to 1x play speed) works
fine. Pressing play while in ffwd or rwd mode teleports me somewhere
else in the stream.

> Capture as RTJPEG (SW compression). 
> Mark commercials. 
> Transcode into MPEG-4. I found that many recordings failed to fast-forward,
> rewind or jump-to-commercial-point properly. Typically the recording would
> only jump into one or two specific places of the recording.
>  Since then I switched over to:
> Capture as MPEG-4. 
> Mark commercials. And now seeking and jumping work flawlessly. Also, seeking
> now finds correct key frames or whatever in the recorded stream, while
> before (IIRC) I could usually see MPEG-4 artifacts after a seek until the
> stream stabilized on a key frame.
>  I don't know if this helps anyone, but I actually would like my original
> setup to work, because real-time software MPEG-4 encoding is sometimes too
> much for my box (which has to perform some other tasks in the background
> too).

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