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    <div class="moz-cite-prefix">Den 02.11.2022 20:28, skrev Andrew
      Randrianasulu:<br>
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    <blockquote type="cite"
cite="mid:CA+rFky6Z06s5GDYksEzm9sDQY8MHNPbG8241nUwKH806dfqXJg@mail.gmail.com">
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            <div dir="ltr" class="gmail_attr">ср, 2 нояб. 2022 г., 19:19
              Andrew Randrianasulu <<a
                href="mailto:randrianasulu@gmail.com" rel="noreferrer
                noreferrer noreferrer noreferrer noreferrer noreferrer"
                target="_blank" moz-do-not-send="true"
                class="moz-txt-link-freetext">randrianasulu@gmail.com</a>>:<br>
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                    <div dir="ltr" class="gmail_attr">ср, 2 нояб. 2022
                      г., 17:59 Terje J. Hanssen <<a
                        href="mailto:terjejhanssen@gmail.com"
                        rel="noreferrer noreferrer noreferrer noreferrer
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                        moz-do-not-send="true"
                        class="moz-txt-link-freetext">terjejhanssen@gmail.com</a>>:<br>
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                        <font face="Courier New, Courier, monospace">On
                          Fri Oct 28 02:35:53 CEST 2022, </font><font
                          face="Courier New, Courier, monospace">Andrew
                          Randrianasulu wrote:</font>
                        <blockquote type="cite"> <font face="Courier
                            New, Courier, monospace"><br>
                            Recorded with Cin-GG :-)<br>
                            <br>
                            <a href="https://youtu.be/7pXG5cnjckQ"
                              rel="noreferrer noreferrer noreferrer
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                              moz-do-not-send="true"
                              class="moz-txt-link-freetext">https://youtu.be/7pXG5cnjckQ</a><br>
                            5min or so ....</font> </blockquote>
                        <br>
                        I put in an extract of section 20.5 of the CinCV
                        manual here:<br>
                        <a
                          href="http://cinelerra-cv.wikidot.com/cincv-manual-en:rendering-files"
                          rel="noreferrer noreferrer noreferrer
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                          target="_blank" moz-do-not-send="true"
                          class="moz-txt-link-freetext">http://cinelerra-cv.wikidot.com/cincv-manual-en:rendering-files</a><br>
                        <blockquote>Most of the time you will want to
                          bring in the rendered output and fine tune the
                          timing on the timeline. Also some file formats
                          like MPEG can not be direct copied. Because of
                          this, the jobs are left in individual files.<br>
                          <br>
                          You can load these by creating a new track and
                          specifying concatenate to existing tracks in
                          the load dialog. Files which support direct
                          copy can be concatenated into a single file by
                          rendering to the same file format with
                          renderfarm disabled. Also to get direct copy,
                          the track dimensions, output dimensions, and
                          asset dimensions must be equal.<br>
                          <br>
                          MPEG files or files which do not support
                          direct copy have to be concatenated with a
                          command line utility. MPEG files can be
                          concatenated with cat.<br>
                          <br>
                        </blockquote>
                        By reading the parallell email thread "[Cin]
                        fileexr/fileppm direct copy support", I wonder
                        if this isn't equivalent to some other NLE's
                        "Smart Rendering" or "by-pass
                        re-encode/compression when possible"?</div>
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                <div dir="auto">partially, but sadly not (yet) smart
                  enough for dealing with non-i-only files ...</div>
                <div dir="auto"><br>
                </div>
                <div dir="auto">there was interesting piece of code
                  potentially decompressing anything ffmpeg can decode
                  in fileyuv in CinCV, but this need some encoding
                  counterpart and also more info passing  between
                  assets, edits and renderer....</div>
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                <div dir="auto"><a
href="https://github.com/cinelerra-cv-team/cinelerra-cv/commit/0ff51f4c53e17ff33701e8cc1096de33a87313b9"
                    rel="noreferrer noreferrer noreferrer noreferrer
                    noreferrer noreferrer noreferrer noreferrer"
                    target="_blank" moz-do-not-send="true"
                    class="moz-txt-link-freetext">https://github.com/cinelerra-cv-team/cinelerra-cv/commit/0ff51f4c53e17ff33701e8cc1096de33a87313b9</a><br>
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                      <div>  If so it would be fine to get this dealed
                        with in the CinGG manual ....?<br>
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                <div dir="auto">CinGG as for now accelerates _image
                  sequences_ in this way, due to our de/muxer moved from
                  dedicated libquicktime-based filemov.c into more
                  complete but complex ffmpeg.c's libavformat de/muxer.</div>
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                <div dir="auto">so, no hdv copy in this mode yet (at
                  least automatic)</div>
                <div dir="auto">May be you can rig avidemux or ffprobe
                  for noting hdv keyframes and set cuts in cin on those
                  boundaries, but this is time-consuming....</div>
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    <br>
    There is also another program, "VideoCut" Version 2.1.1 - MP2/MP4
    Cutter for Linux on base of mpv and ffmpeg. Cutting is lossless, the
    target file will not be reencoded.<br>
    <a class="moz-txt-link-freetext" href="https://github.com/kanehekili/VideoCut">https://github.com/kanehekili/VideoCut</a><br>
    <br>
    <br>
    <br>
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cite="mid:CA+rFky6Z06s5GDYksEzm9sDQY8MHNPbG8241nUwKH806dfqXJg@mail.gmail.com">
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                      <div> <a
href="https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=157600"
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                          target="_blank" moz-do-not-send="true">https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=157600</a><br>
                        <a href="https://www.kevinmonahan.net/?p=88"
                          rel="noreferrer noreferrer noreferrer
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                          target="_blank" moz-do-not-send="true"
                          class="moz-txt-link-freetext">https://www.kevinmonahan.net/?p=88</a></div>
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                <div dir="auto">thanks for links, will look into them.</div>
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                        <br>
                        And maybe also another CinGG theme "HDV on a
                        Blu-ray without re-encode" as discussed earlier,
                        is related and needs some manual update?  <br>
                        <a
href="https://cinelerra-gg.org/download/CinelerraGG_Manual/HDV_on_Blu_ray_Disc_Without.html"
                          rel="noreferrer noreferrer noreferrer
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                          class="moz-txt-link-freetext">https://cinelerra-gg.org/download/CinelerraGG_Manual/HDV_on_Blu_ray_Disc_Without.html</a></div>
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        <div dir="auto">this one not dealing with cutting your footage,
          just author disk with bdwrite :)</div>
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    <br>
    Yeah, I see that.<br>
    But as we concluded, the manual section needs update, both on the
    HDV definition, and adding the procedures to transcode and remux HDV
    mp2 audio into a Bluray compliant format.<br>
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03521.html">https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03521.html</a><br>
    <br>
    <br>
    <blockquote type="cite"
cite="mid:CA+rFky6Z06s5GDYksEzm9sDQY8MHNPbG8241nUwKH806dfqXJg@mail.gmail.com">
      <div dir="auto">
        <div dir="auto"><br>
        </div>
        <div dir="auto">for cutting without reencoding you probably
          should test some ideas discussed in</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto"><a
            href="https://github.com/mifi/lossless-cut/pull/13"
            rel="noreferrer noreferrer noreferrer noreferrer noreferrer
            noreferrer" target="_blank" moz-do-not-send="true"
            class="moz-txt-link-freetext">https://github.com/mifi/lossless-cut/pull/13</a><br>
        </div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">namely order of ffmpeg params and also </div>
        <div dir="auto">'-avoid_negative_ts', 'make_zero' params.</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">So, theory of operation you scan your media with
          ffprobe and it produces list of timecodes where you *can* cut
          files safely. Then you can probably output your cut-only edit
          as edl from Cinelerra and use it as input for ffmpeg-based
          script doing cuts, with some math inside considering that
          portions you can copy and that need reencoding. </div>
        <div dir="auto"><br>
        </div>
        <div dir="auto"><a
href="https://github.com/mifi/lossless-cut/pull/13#issuecomment-279226516"
            rel="noreferrer noreferrer noreferrer noreferrer"
            target="_blank" moz-do-not-send="true"
            class="moz-txt-link-freetext">https://github.com/mifi/lossless-cut/pull/13#issuecomment-279226516</a><br>
        </div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">But for this to works ffmpeg-based cutter should
          be accurate nearly always ...so testing on real HDV files
          (often hours long) very much needed (you can put your source 
          files on r/o mounted fs just for avoiding bad surprises with
          ffmpeg output).</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">usual bad surprises include blank frames, bad/no
          play, sound desynchronysing ....not something you hoped for
          while wishing for -lossless- cut.</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">One can ask why bothering with NLE? well,
          timecode display and bidirectional framestepping ....</div>
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                      <div><br>
                        <a
href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03520.html"
                          rel="noreferrer noreferrer noreferrer
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                          noreferrer noreferrer noreferrer"
                          target="_blank" moz-do-not-send="true"
                          class="moz-txt-link-freetext">https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03520.html</a></div>
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        <div dir="auto"><br>
        </div>
        <div dir="auto">also IgorV recently rediscovered some scripts
          from old times, some of them hope to produces avchd disks as
          readable by Sony's PS3 for example (they used closed-source
          tsmuxer, but i hope opensource version works for now)</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto"><a
href="https://github.com/IgorVladimirsky/cinelerra-scripts-from-code.google.com/blob/main/mov2m2ts-1080p50.sh"
            rel="noreferrer noreferrer" target="_blank"
            moz-do-not-send="true" class="moz-txt-link-freetext">https://github.com/IgorVladimirsky/cinelerra-scripts-from-code.google.com/blob/main/mov2m2ts-1080p50.sh</a><br>
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        <div dir="auto">those scripts reencode, so not very topical for
          cutting but might be interesting evening read anyway.</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto"><a
href="https://github.com/IgorVladimirsky/cinelerra-scripts-from-code.google.com/blob/main/render-1080i50.sh"
            target="_blank" rel="noreferrer" moz-do-not-send="true"
            class="moz-txt-link-freetext">https://github.com/IgorVladimirsky/cinelerra-scripts-from-code.google.com/blob/main/render-1080i50.sh</a><br>
        </div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">make_m2ts_avchd_dvd function namely<br>
        </div>
        <div dir="auto"><br>
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                <div dir="auto">As far as I understand problem for mpeg
                  like codecs  you must re-encode not just frames you
                  altered, but also frames between your cut and
                  codec-defined input keyframes, and this kind of info
                  simply not wired inside cinelerra .... I'll try to
                  download ffprobe-based I-frames finder as prototyped
                  by Bill long time ago and play with its output as
                  guidance for cutting mpeg2 like streams </div>
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                <div dir="auto"><br>
                </div>
                <div dir="auto">but just for unexpected side of video
                  decoding at some time Natron apparently had weird
                  reordering problem on reading mp4 files, probably due
                  to in-decoder reordering ...some fun (eh) to code for
                  ...</div>
                <div dir="auto"><br>
                </div>
                <div dir="auto"><a
                    href="https://github.com/NatronGitHub/Natron/issues/555"
                    rel="noreferrer noreferrer noreferrer noreferrer
                    noreferrer noreferrer noreferrer" target="_blank"
                    moz-do-not-send="true" class="moz-txt-link-freetext">https://github.com/NatronGitHub/Natron/issues/555</a><br>
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