X-Git-Url: https://main.carlh.net/gitweb/?p=dcpomatic.git;a=blobdiff_plain;f=doc%2Fmanual%2Fdcpomatic.xml;h=19551d0086442483c35ad36d15bd4f8081190556;hp=0354d6b550aef8d871414cc38cef7036652e9a4c;hb=91adae31531b3ac8d1129cc3b2df577a39a892ee;hpb=6b5f5dfe4aebf10a7ecd707e157a85d89270a4ff diff --git a/doc/manual/dcpomatic.xml b/doc/manual/dcpomatic.xml index 0354d6b55..19551d008 100644 --- a/doc/manual/dcpomatic.xml +++ b/doc/manual/dcpomatic.xml @@ -1874,7 +1874,7 @@ unused channel will be filled with silence. The Processor control allows you to select a -process to apply to the audio before it goes into the DCP. Three processes are currently provided: +process to apply to the audio before it goes into the DCP. One process is currently provided: @@ -1884,31 +1884,7 @@ stereo input and extract the common part (corresponding to the The remaining L/R parts will be kept in the L/R channels of the DCP. This may be useful to make near-field L/R mixes more compatible with cinema audio systems. -Stereo to 5.1 up-mixer A — this will take a stereo input and up-mix it to ‘fake’ 5.1. The input L/R are treated as follows: - -DCP L is input L bandpass-filtered between 1.9kHz and 4.8kHz. -DCP R is input R bandpass-filtered between 1.9kHz and 4.8kHz. -DCP C is input L mixed with input R, taken down by 3dB and then bandpass-filtered between 150Hz and 1.9kHz. -DCP Lfe is input L mixed with input R, taken down by 3dB and then bandpass-filtered between 20Hz and 150Hz. -DCP Ls is input L bandpass-filtered between 4.8kHz and 20kHz. -DCP Rs is input R bandpass-filtered between 4.8kHz and 20kHz. - -This upmixing algorithm is due to Gérald Maruccia. - - -Stereo to 5.1 up-mixer B — this uses a different approach: - - DCP L is input L. - DCP R is input R. - DCP C is input L + input R taken down by 3dB. - DCP Lfe is DCP C bandpass filtered between 20Hz and 150Hz. - DCP Ls and Rs are input L - input R with a 20ms delay. - - - - -The up-mixers are not particularly advanced and should be used with care. You are strongly advised to check how the DCPs sound in a cinema if you have used one of DCP-o-matic's upmixers.
@@ -2139,7 +2115,15 @@ from the timeline is also preserved. From this dialogue you can select the required output format, output file and, in the case of MP4, the quality of the output - file. Higher quality files will, of course, be larger. + file (by setting the CRF value). + + + + The useful range of CRF values is from 17 (high quality but large file size) to 28 (smaller file size and still reasonable quality). + + + + The time needed to export, and the resulting size, depend partly on the DCP resolution set in the project. To change that, see chapter . @@ -3786,21 +3770,25 @@ The full details of OV and VF files are discussed in Verifying DCPs - The player also offers a DCP checker. To check a DCP, + The player also offers a DCP verifier. To check a DCP, open it and then select Verify DCP from the Tools menu. - The validator will report three kinds of problems: + The verifier will report three kinds of problems: - Errors — serious problems with the DCP that are likely to cause problems on playback. - Bv2.1 errors — errors described by the SMPTE Bv2.1 standard. - Warnings — small problems that may not matter. + Errors — serious problems with the DCP that are likely to cause problems on playback. + Bv2.1 errors — errors described by the SMPTE Bv2.1 standard. + Warnings — small problems that may not matter. + + The following sections list what the verifier checks for in each category. + +
Errors