4 Replies Latest reply on Jan 18, 2011 8:53 AM by Todd_Kopriva

    Finding a suitable After Effects CS4 rendering setting

    are595

      Hi, I am currently trying to add some text to a video while keeping the video's settings. These are the source video's settings:

       

      Video

      ID                               : 1

      Format                           : AVC

      Format/Info                      : Advanced Video Codec

      Format profile                   : High@L4.1

      Format settings, CABAC           : Yes

      Format settings, ReFrames        : 4 frames

      Codec ID                         : avc1

      Codec ID/Info                    : Advanced Video Coding

      Duration                         : 4mn 15s

      Bit rate mode                    : Variable

      Bit rate                         : 2 022 Kbps

      Maximum bit rate                 : 9 328 Kbps

      Width                            : 1 280 pixels

      Height                           : 720 pixels

      Display aspect ratio             : 16:9

      Frame rate mode                  : Constant

      Frame rate                       : 29.970 fps

      Resolution                       : 8 bits

      Colorimetry                      : 4:2:0

      Scan type                        : Progressive

      Bits/(Pixel*Frame)               : 0.073

      Stream size                      : 61.5 MiB (89%)

      Writing library                  : x264 core 112 r1834 a51816a

      Encoding settings                : cabac=1 / ref=4 / deblock=1:-2:-2 / analyse=0x3:0x113 / me=umh / subme=9 / psy=1 / psy_rd=0.60:0.20 / mixed_ref=1 / me_range=32 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-3 / threads=6 / sliced_threads=0 / nr=0 / decimate=0 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=0 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=1 / scenecut=60 / intra_refresh=0 / rc=crf / mbtree=0 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=30 / qpstep=8 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:0.50

      Encoded date                     : UTC 2011-01-14 15:37:51

      Tagged date                      : UTC 2011-01-14 15:48:32

      Color primaries                  : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177

      Transfer characteristics         : BT.709-5, BT.1361

      Matrix coefficients              : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

       

      Audio

      ID                               : 2

      Format                           : AAC

      Format/Info                      : Advanced Audio Codec

      Format version                   : Version 4

      Format profile                   : LC

      Format settings, SBR             : No

      Codec ID                         : 40

      Duration                         : 4mn 15s

      Bit rate mode                    : Variable

      Bit rate                         : 253 Kbps

      Maximum bit rate                 : 257 Kbps

      Channel(s)                       : 2 channels

      Channel positions                : Front: L R

      Sampling rate                    : 48.0 KHz

      Stream size                      : 7.68 MiB (11%)

      Encoded date                     : UTC 2011-01-14 15:48:32

      Tagged date                      : UTC 2011-01-14 15:48:32

       

       

      I would, in a perfect world, like to render the video with the text with these exact same settings (or without rendering the video but just adding the text). Is there any way I could do this?

       

      Thanks

        • 1. Re: Finding a suitable After Effects CS4 rendering setting
          Mylenium Most Valuable Participant

          I would, in a perfect world, like to render the video with the text with these exact same settings (or without rendering the video but just adding the text). Is there any way I could do this?

           

          No. For all intents and purposes, that is completely mutually exclusive. The footage must be decoded at any cost then the text integrated into the background pixels, resulting in a re-encode. It's simply not possible for technical reasons in any program on this planet. The only way to achieve some sort of pass-through would not to do anything to the footage but cut it, but obviously that is not happening here and also would require a program like Premiere or Vegas to handle it. Based on that, in these programs you could also selectively re-encode only the sections thatr have the text, but never ever any of that in Ae. As a compositing program, it always expands the pixel data fully and after that, everything is a full new encode. so ultimately, how you out put it from there doesn't matter. Naturally, to avoid further recompression once you go back to your edit program, you would use visualyl lossless formats like Quicktime animation or PNG, but that's very much it...

           

          Mylenium

          1 person found this helpful
          • 2. Re: Finding a suitable After Effects CS4 rendering setting
            are595 Level 1

            Alright, so then are there any settings that are similar to the original that i can chose without any major quality degradation? I tried rendering the ~1 minute clip that has the text as lossless and got a 7gb file =/.

            • 3. Re: Finding a suitable After Effects CS4 rendering setting
              Mylenium Most Valuable Participant

              What I already wrote - Quicktime with the Animation or PNG CoDecs is what people use all the time. Please read the help on how to adjust output module settings to gain access to other formats.

               

              Mylenium

              • 4. Re: Finding a suitable After Effects CS4 rendering setting
                Todd_Kopriva Level 8

                Mylenium has given you some good advice and information. This FAQ entry gives some links to additional information explaining the difference between output settngs for intermediate files (usually losslessly encoded) versus files for distribution and playback (usually highly and lossily compressed).