[ubuntu-mythtv] Mythbuntu 16.04 transcode to MPEG-4 corrupting video

[Tom Prouse]

Thankyou for the advice Anthony. I'll pose this question on a mythtv list.

FYI the channels I was attempting to transcode were ABC, SBS and 7mate.

Thanks,
Tom

On Fri, Apr 29, 2016 at 9:20 AM, Anthony Giggins <seven at seven.dorksville.net
> wrote:

>
>
> On 28 April 2016 at 23:20, Tom Prouse <tom.prouse at gmail.com> wrote:
>
>> Hi all,
>>
>> I've just this week installed a fresh copy of mythbuntu 16.04 on an old
>> pc. Everything appears to be working well except for transcoding recordings.
>>
>> When I transcode a recording to MPEG-4 (with or without High Quality or
>> advanced motion estimation checked in the recording profile) it corrupts
>> the video. Audio is fine, but the video looks like a test signal. The
>> corruption is visible in mythweb (the thumbnail shows a frame of the
>> corrupted video) and through the openelec kodi pvr.mythtv plugin, I don't
>> use mythfrontend. All recordings are from australian DVB-T channels, the
>> files in the recordings folder have the extension .ts
>>
>> Does anyone have an idea what could be causing this?
>>
>> MythTV Version : v28.0-9-g1bec90b
>> MythTV Branch : fixes/0.28
>> Network Protocol : 88
>> Library API : 0.28.20160309-1
>> QT Version : 5.5.1
>> Options compiled in:
>>  linux profile use_hidesyms using_alsa using_oss using_pulse
>> using_pulseoutput using_backend using_bindings_perl using_bindings_python
>> using_bindings_php using_crystalhd using_dvb using_firewire using_frontend
>> using_hdhomerun using_vbox using_ceton using_hdpvr using_ivtv
>> using_joystick_menu using_libcec using_libcrypto using_libdns_sd
>> using_libfftw3 using_libxml2 using_lirc using_mheg using_opengl
>> using_opengl_video using_qtwebkit using_qtscript using_qtdbus using_sdl
>> using_taglib using_v4l2 using_x11 using_xrandr using_xv using_profiletype
>> using_bindings_perl using_bindings_python using_bindings_php
>> using_freetype2 using_mythtranscode using_opengl using_vaapi using_vdpau
>> using_ffmpeg_threads using_mheg using_libass using_libxml2
>>
>> Thanks,
>> Tom
>>
>>
> Hi Tom,
>
> This is probably a question for the mythtv-users or the mythtv-dev mailing
> lists
> http://lists.mythtv.org/mailman/listinfo/mythtv-users
> http://lists.mythtv.org/mailman/listinfo/mythtv-dev
>
> however what channels are you recording from as a small number of
> Australian channel have moved to MPEG4, I know in 0.27.6 that lossless
> transcoding of MPEG4 recordings fails so I've resorted to the Lossless cut
> job user from
>
> https://www.mythtv.org/wiki/Lossless_Cut
>
> Cheers,
>
> Anthony
>
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