Enabling fast forwand with transcoding

[Rapper_skull]

Hello, I have a problem on my C series TV. I enabled transcoding on all kind of files because basically every file I have is not directly supported by my TV (mainly because it does not support subtitles embedded in MKV files). It works but I can't fast forward. I manually applied the C/D series profile to my Nexus 5 and with BubbleUPNP and MXPlayer I was able to jump through the video. Is there a way to make it work on the TV too?

EDIT: Today I tried again using BubbleUPNP and both VLC and MX Player and I wasn't able to fast forward. Here's my profiles.xml

  Code:

   <Profile id="7" name="Samsung TV / player (C/D-series)" extendsProfileId="sam_ef">
      <Detection>
         <UPnPSearch>
            <FriendlyName>(^TV-\d{2}C\d{3}.*)|(^\[TV\][A-Z]{2}\d{2}(D)[A-Z]?\d{3,4}.*)|^\[TV\] Samsung</FriendlyName>            
            <ModelNumber>(1\.0)|(AllShare1\.0)</ModelNumber>
         </UPnPSearch>   
         <HttpHeaders>
            <!-- for BD players -->
            <User-Agent>(.*SEC_HHP_BD-[CD].*)|(.*SEC_HHP_\[(HT|BD)\][CD].*)</User-Agent>
         </HttpHeaders>
      </Detection>
      <Transcoding>
         <!-- transcode audio only for wmv with wmapro -->
         <Video targetContainer="mpegts" targetVCodec="mpeg2video" targetACodec="ac3" aBitrate="384">
            <Matches container="*" />
         </Video>
         <Audio targetContainer="lpcm">
            <Matches container="flac" />            
         </Audio>
      </Transcoding>
      <OnlineTranscoding>
         <Video targetContainer="mpegts" targetVCodec="mpeg2video" targetACodec="ac3" aBitrate="384">
            <Matches container="*" />
         </Video>
      </OnlineTranscoding>
      <HardSubsTranscoding>
         <Video targetContainer="mpeg" targetVCodec="mpeg2video" targetACodec="ac3" aBitrate="384" />
      </HardSubsTranscoding>
      <Subtitles>
         <HardSubs>
            <RequiredFor container="*" />
         </HardSubs>
      </Subtitles>
   </Profile>

[zip]

It's hard with transcoding, as we don't know how many bytes the target file will be. Serviio supports time-based seek as well, but perhaps your clients don't.