If you see captions, then your STB is suitable for use with this technique. Tune the STB to a high-definition channel, and then use the television's internal settings (not the STB settings) to select closed captions. To test these requirements, connect your television set to the standard-definition outputs of the STB.

Your STB must include VBI data in the standard-definition outputs.

Your STB must produce output on the standard-definition outputs even when tuned to a high-definition channel.

If using a coaxial connection, some changes will have to be made to the script, you will have to choose the correct input number, and will have to set the tuner frequency.

You must have a STB that has standard-definition outputs as well as the component outputs used by the HD-PVR.

Add a configurable post-roll overrun to ensure that captions are recorded during that interval when it is being usedД«efore proceeding, first determine whether you have the hardware required.

Change the delay_bias to be in milliseconds rather than in seconds.

Explicitly use /bin/bash instead of /bin/sh to ensure we have pushd/popd available.

Following some suggestions from stichnot:.

Put in changes to kill a ccextractor doing VBI reads from an earlier recording if it somehow is still running.

Please report this: 65536 bytes is not enough!' There is some evidence that if the card's current bitrate (from either boot-time configuration or a previous use of the card) is too high, ccextractor may error out partway through with a message like 'Error: Not enough memory.

Added a v4l2-ctl command to explicitly set the bitrate.

There is a command-line parsing bug present in some versions of v4l2-ctl, so the script has been changed to handle that.

The scripts have been modified to account for this. The VBI-related ioctl calls should go through the appropriate VBI device, it is now an error to configure VBI through the video device. The V4L2 kernel modules have tightened the rules on ioctls.Following more suggestions from stichnot, made changes that would allow captions to be viewed while recording, or in live TV.srt file is obtained by scanning the standard-definition outputs of the STB. MythTV will automatically use such a file if it is found. The captions can take up to several seconds to be written to disc, so viewing will have to be at least several seconds behind the live broadcast, or captions will arrive too late to be displayed.ДЄs with several other scripts, this works by dropping a. Please note that, unlike earlier versions of these scripts, this procedure now requires no post-processing after a recording is complete, so it works with live television and with programs that are being watched while still being recorded. This procedure has been tested with a Hauppauge PVR-500. The technique described here allows recordings to be made with closed caption information, provided that the STB has the correct behaviour, and that you have a card capable of reading the VBI data from a composite or coaxial standard-definition stream. The technique described here allows closed-caption recording, with caption text that can be turned on or off as desired during the viewing of a recording. One alternative that may be suitable for some users is to use the STB (set-top box) to render the captions, so that they are seen as open captions by the HD-PVR, but this has the disadvantage of not being selectable at viewing time, the captions are an inextricable part of the video data. This set of scripts provides a way, given the right hardware, to record closed-caption data for HD-PVR recordings.Д«ecause there is no defined standard for the transmission of closed-caption information over high-definition connections such as component or HDMI, it is not currently possible to obtain closed caption data from recordings produced by a Hauppauge HD-PVR. Long=This set of scripts provides a way, given the right hardware, to record closed-caption data for HD-PVR recordings.

Short=Record closed-caption data for HD-PVR recordings

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