This section is optional but recommended if you are not in bitstream, for the reasons mentioned in the next part.
This software is very clever, thanks to it everything will be perfect if your TV does not be set to the frequency of the video. Indeed it will change the framerate of the video to be set to the frequency of the screen.
Double click on the installer of Reclock and let everything by default. You can access the setting by doing "menu démarrer / Reclock / Configure ReClock".
What you should know is that all movies are shot at 24 frames per second but all DVDs sold in europe and PAL country are in 25 frames per second. From 24 to 25fps the studios speedup slightly the video and audio by 4.17%. This results in a film slightly shorter (2 hour film is 5 minutes shorter), which goes a little faster than the original and the soundtrack is more acute. All voices, music etc.. are more acute. This process is called PAL SpeedUp. I suggest downloading these files for you to hear this effect :"Buffy the Vampire Slayer"; Episode "Once More With Feeling", First Song // "The Simpsons"; Opening titles and credits. These examples are taken from this page.
On Blu-ray there is also a problem but it is different. Blu-ray are mostly in 23.976fps it is slightly slower than the original film and it's imperceptible. The problem is that if your TV does not provide 24hz you will have to put on 50hz or 60hz and then your TV will duplicate some of the images to be synchronized with the audio. It make movie stutter. If you say, it's ok my TV support 24hz no problem but no the problem is certainly less visible but still there. Actually 23.976fps is not exactly 24hz so once again the movie stutters but this time much less. If your TV support 23.976hz there is no problem.
The best is to put your TV on 24hz and to set the video and audio on that frequency, that's what Reclock will do without stuttering and putting back the origine pitch. If your TV is not compatible put it on 50hz Reclock charge to speed up or slow down the video and audio without stutters.
Audio Interfaces to use for
PCM : "WASAPI Exlusive". In analog - HDMI PCM it is this interface that will be used for passing the decoded sound in stereo and in 5.1. If you have XP you can put KernelStreaming.
Bitstream : "WaveOut". In Digital S/PDIF - HDMI it is this interface that will be used when you re-encode the audio. The audio in stereo and in 5.1 decoded, resampled and re-encoded to AC3 by reclock pass by there.
Devices to use with
Dans WaveOut you have to choose your output, HDMI or S/PDIF (eg Realtek Digital Output (RCA)). The sound will be sent to the receiver decoded, resampled and reencoded in AC3.
Dans WASAPI Exclusive you have to choose your output, analog or HDMI PCM (ex: Speakers). Decoded and resampled audio will be sent in stereo and 5.1 by this output.
Duration : 500 ms.
PCM : 20%
Bitstream : 5%.
In Analog - HDMI PCM remember to configure your sound card with the same parameters as Reclock (Format et Sampling Rate).
Sampling rate : "96khz". If your sound card supports it. Otherwise turn down until it's ok (48khz). If you are in HDMI PCM your receiver may be limited to 48khz.
Format : 24 bit int padded to 32. If your sound card supports it otherwise put "16 bit int.
Quality : Best Sinc Interpolation. Determines the resampling quality
Output mono source to both front chnnels : You can check it, it's allow to output mono on front speakers.
Set matching speakers configuration : In analog - HDMI PCM check it. In digital HDMI - S/PDIF don't check it.
Time Streching : Attention it deteriorates a bit the sound quality I don't advise to check. This feature will help to keep the sound pitch when you speed up or slow down the film. When we slow down from 25 to 24fps should not check when slowing down and when speed up from 23.976 to 25fps check when speeding up.
Use AC3 encoding : If you are in analog - HDMI PCM - don't check this box. But if you're in digital HDMI - S/PDIF it is this option that will allow you to get the sound via the S/PDIF by re-encode it to AC3.
Only with multi-channel sources : Leave unchecked.
As we do not use reclock in Bitream leave unchecked "Accept bitstream formats".
Hardware Interface : DirectDraw
Put DirectDraw otherwise it will be a conflict with the MPC-HC renderer
Monitor detection : Automatic
If you have, like me, 2 screens it will select the good one to get back the correct frequency.
Media files : Check the 2 boxes and put 23.976fps or 25fps depending on what you watch most.
DVD : Check the box and put 25fps.
Speed change of media with PCM audio : Put 5% in 2 boxes
General : Check the 2 boxes
There it's simple leave everything unchecked.
To access to the properties of Reclock you have to click on the clock-shaped green icon in the systray while Reclock is running. But first, if you don't use madVR, "D3D Fullscreen" has to be temporarily disabled, in MPC-HC, by clicking "View" then "Renderer Settings" "Presentation" and uncheck "D3D Fullscreen". This icon is green if Reclock had set video framerate on screen frequency, which may take some time. If the icon is not green, even after a few minutes, there is a problem and Reclock can not set video framerate on screen frequency.
Go to Media adaptation, set Speed to the same frequency or a multiple of the TV. This frequency is in Video Hardware/Refresh rate. You can also put "Auto (best)" and reclock will put the video on the correct frequency according to TV. If you are in 24hz you can check "PAL SpeedDown (force to 24fps)" to reclock videos from 25 to 24fps. You can close the windows and reactivate D3D Fullscreen if needed.
Only if you know what is the Bitperfect and that's what you want to do.
If you want to benefit bitperfect follow the HDMI PCM - analog configuration but don't check anything in "Audio settings" tab , in "Sampling rate:" put "Same as input" and in "Format:" put "Same as input". Then create a DWORD value "BypassResampler" and put 1 in the registry (HKEY_CURRENT_USERSoftwareReClockConfig). In Reclock properties in "Speed" put "Original speed" and check Locked. You have to put your TV at the same frequency or a multiple of the framerate of the video because reclock don't touch the video or audio.
Image Credits: Jaako
- 1. Intro
- 2. Selecting Softwares
- 3. Media Player Classic Home Cinema - 1
- 4. Media Player Classic Home Cinema - 2
- 5. Media Player Classic Home Cinema - 3
- 6. Media Player Classic Home Cinema - 4
- 7. ffdshow Video - 1
- 8. ffdshow Video - 2
- 9. ffdshow Video - 3
- 10. ffdshow Video - 4
- 11. madVR - 1
- 12. madVR - 2
- 13. ffdshow Audio - 1
- 14. ffdshow Audio - 2
- 15. Reclock
- 16. AutoFrequency
- 17. Tips
- 18. Before / After
- 19. Conclusion