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  1. Member
    Join Date
    Dec 2016
    Location
    Victoria
    Search Comp PM
    Hello,

    I have some H.265 files that I want to convert to MPEG-4 so I can play them. I installed Handbrake 0.10.5.0, but after selecting the input and clicking Start it completes in about 1 second and doesn't produce the output file. The Activity Log has a lot of stuff, including multiple:
    dxva2xFindVideoServiceConversion failed
    Warning: Could not read data for preview 1, skipped

    I can't tell what has gone wrong. Then as a test I tried an MP4 file that I can play and has no problems as far as I know, but the conversion also finished quickly and created no output file. Once it decided the input was a file/stream the log shows:
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\User\Videos\CB(Live on KEXP).mp4':
    Metadata:
    major_brand : mp42
    minor_version : 0
    compatible_brands: isommp42
    creation_time : 2014-08-17 02:14:00
    Duration: 00:45:09.62, start: 0.000000, bitrate: 1612 kb/s
    Stream #0.0(und): Video: h264 (High), yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 1417 kb/s, 23.98 fps, 24k tbn, 47.95 tbc (default)
    Stream #0.1(und): Audio: aac, 44100 Hz, stereo, fltp, 191 kb/s (default)
    Metadata:
    creation_time : 2014-08-17 02:14:13
    [09:03:02] scan: decoding previews for title 1
    [09:03:02] scan: audio 0x1: aac, rate=44100Hz, bitrate=191999 Unknown (AAC) (2.0 ch)
    [09:03:02] scan: 10 previews, 1280x720, 23.976 fps, autocrop = 0/0/0/0, aspect 16:9, PAR 1:1
    [09:03:02] libhb: scan thread found 1 valid title(s)

    Again I can't see what's wrong. Any suggestions?
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  2. In settings->video disable all hardware decoding options.

    If that doesn't work (or already disabled) try latest nightly.
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  3. Member
    Join Date
    Dec 2016
    Location
    Victoria
    Search Comp PM
    I disabled QuickSync Decoding, but that didn't work. The only other option in Video is DXVA Hardware Accelerated Decoding. It was off but I tried it on and it didn't help either.

    Is an experimental version in 'nightly' likely to work if it won't convert what seems to be a routine MP4 file?

    I just downloaded an MPEG-1 file from the Hubble Space Telescope website and it failed on that as well.
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  4. Dinosaur Supervisor KarMa's Avatar
    Join Date
    Jul 2015
    Location
    US
    Search Comp PM
    I know I had this problem with my old graphics card (ATI 4670) and one of the Handbrake 10 versions, causing it to output instantly with a empty file. Filed a bug report on Handbrakes website but it never really went anywhere. Might try Handbrake 0.9.9, but it probably does not have H265 decoding support. Might also try VidCoder.
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  5. Member
    Join Date
    Dec 2016
    Location
    Victoria
    Search Comp PM
    Thanks. I will give VidCoder a go.
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  6. Member
    Join Date
    Dec 2016
    Location
    Victoria
    Search Comp PM
    On a quick look after converting one file, VidCoder has done a good job converting H.265 to MPEG-4. Very straightforward to use. The notes say that it uses Handbrake as its encoding engine, yet it works while Handbrake itself doesn't.
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