DVDFab Forum - VC-1 to h265 conversion cause motion jitter

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  • VC-1 to h265 conversion cause motion jitter

    I'm trying to do a conversion from vc-1 1080p bluray to h265.

    The output file has the same fps. But some frames of the input are skipped while others duplicated. The result is a very uneven motion (jitter) in the video.

    Here is a the log:
    Code:
    0m 00.09s: info, try to open file F:/DVDFab/Journey to the Center of the Earth (2008).mkv
     0m 00.12s: warning: audio info: index 1, codec_id 86019, channels 6, bitrate 640000, sample_rate 48000, format 8, bit_per_sample 0, frame_size 0 
     0m 00.12s: info: open successed, iformat = Matroska / WebM
     0m 00.12s: info: create config(videoconvert)
     0m 00.12s: info: crop value after clone: left = 0 right= 0 top=0 bottom=0 enable=0 mode=0
     0m 00.12s: info: use profile(MP4.H265)
     0m 00.12s: info: file (.mkv)
     0m 00.12s: info: 3D working_mode(disable), 3D format(sbs_lef_right) 
     0m 00.13s: info: stream input@ Video(0)[codec(vc1) size(1920*1080) fps(24000/1001) interlace(0) duration(5554)sec opcode(compress)]
    1360m 38.30s: UILog:MsgWork:WorkStatus_Start
     0m 00.13s: info: perset file config OK ! 
     0m 00.13s: info: set output video frame_rate(24000/1001)
     0m 00.13s: info: recommand= 0, Shrink support= 0, enable= 0, cuda_cap= 0 , cpu_count= 8
     0m 00.13s: info: stream output Video(0)[codec(hevc) size(1920*1080) fps(24000/1001) interlace(0) bitrate(2486) duration(5554)sec]
     0m 00.14s: info: stream input@ Audio(1)[codec(ac3) channels(6) sample(48000) bitrate(640000) bitdepth(0) opcode(compress)]
     0m 00.14s: info: stream output Audio(1)[codec(aac) channels(6) sample(48000) bitrate(448000) bitdepth(16) opcode(compress)]
     0m 00.14s: info: SubMode(Render) -- Display Only forced Subtitle(false) 
     0m 00.15s: info: enable multi-thread software decoder, thread count = 8
    1360m 38.33s: UILog:MsgWork:WorkStatus_Start
     0m 00.22s: info: h264_encode: encode param profile(1) level(40) bitrate(2486) crf(-1)
    278m 02.56s: info: audio_decode finish job
    278m 02.57s: audio_encode finish job
    278m 33.27s:

  • #2
    How are you testing the playback to determine that frames are being dropped/duplicated?
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    • #3
      I'm running the video in Vlc or Media Player Cinema using their frame by frame mode.

      Comment


      • #4
        The question here is whether the problem is occurring in the decode or encode part of the conversion. Are you using GPU for decoding? If so, try setting decode to software and see if it persists.
        Supplying DVDFab Logs in the Forum ...........................User Manual PDF for DVDFab v11................................ Guide: Using Images in Posts
        Supplying DMS Logs to Developers.............

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        • #5
          The decoding is software, as is the encoding.

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          • #6
            I have this disc and will try it also, please tell me the settings for the first version you made (the source file for the conversion).
            Supplying DVDFab Logs in the Forum ...........................User Manual PDF for DVDFab v11................................ Guide: Using Images in Posts
            Supplying DMS Logs to Developers.............

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            • #7
              I used XMedia Recode to copy the video/audio streams in a mkv file.
              No conversion.

              Comment


              • #8
                The issue has been solved in 9.1.8.6beta.

                Good job guys!

                Comment


                • #9
                  I have a comeback of that bug with 9.1.8.8.

                  This time is with the "The Change-Up" bluray movie. Like the last time, the logs don't show anything unusual.

                  This time the effective output frame rate is half the rate of the source, even though the file is encoded at the proper frame rate. In other words, the picture changes every two frames (checked with frame by frame viewing in MPC-HC).

                  Comment


                  • #10
                    The problem exists throughout 9.3 and up to 10.0.2. Framerate is cut in half, each frame is output twice.

                    I can not say if it is the decode or encode side. But I can reproduce it with a lot of VC1 sources.

                    Software decode/encode oder hardware Intel QuickSync makes no difference.
                    Last edited by ludicree; 02-02-2017, 04:10 PM.

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                    • #11
                      It seems this issue isn't still solved on the 10.2.1.6 DVDFab version.
                      I've been testing to convert VC-1 to H264 with the last updates and always the same problem: motion jitter on all tests, it doesn't matter what I setup when doing the conversion.

                      Any news about this problem ?

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