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Mythtranscode and H.264

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RobertCL at iname

Aug 12, 2008, 7:22 AM

Post #1 of 2 (3340 views)
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Mythtranscode and H.264

Hi,

Trying to losslessly transcode BBC HD h.264 -> h.264 to cut the start and
end from a recording. Mythtranscode dies saying "Unknown video codec:
H.264" (more log stuff below)

Reading this thread from a few months ago
[http://www.gossamer-threads.com/lists/mythtv/users/325822] it "doesn't
work". I was wondering if anything was being done to make it work? Or is
there another way I can chop up H.264 recordings?

Thanks,
Robert.

2008-08-11 19:29:03.952 Transcoding from
/store/mythtv/recordings/7940_20080810224700.mpg to
/store/mythtv/recordings/7940_20080810224700.mpg.tmp
2008-08-11 19:29:03.960 Connecting to backend server: 192.168.0.104:6543
(try 1 of 5)
2008-08-11 19:29:03.965 Using protocol version 40
2008-08-11 19:29:03.966 MainServer::HandleAnnounce Monitor
2008-08-11 19:29:03.973 adding: quad as a client (events: 0)
2008-08-11 19:29:03.986 MainServer::HandleAnnounce Monitor
2008-08-11 19:29:03.997 adding: quad as a client (events: 1)
2008-08-11 19:29:04.230 AFD: Opened codec 0xb3d20fb0, id(H264) type(Video)
2008-08-11 19:29:04.236 AFD: codec MP3 has 2 channels
2008-08-11 19:29:04.237 AFD: Opened codec 0xb3d215a0, id(MP3) type(Audio)
2008-08-11 19:29:04.237 AFD: codec AC3 has 2 channels
2008-08-11 19:29:04.238 AFD: Opened codec 0xb3d276d0, id(AC3) type(Audio)
2008-08-11 19:29:04.256 Honoring the cutlist while transcoding
2008-08-11 19:29:04.257 Cutlist : 0-4611,16586-19428
2008-08-11 19:29:04.267 Original Length: 19428 frames
2008-08-11 19:29:04.268 New Length : 11975 frames
2008-08-11 19:29:04.269 Found video height of 1088. This is unusual and
more than likely the video is actually 1080 so mythtranscode will treat it
as such.
2008-08-11 19:29:04.281 SampleRate: Attempted to add a rate 32000 Hz,
which is not in the list of allowed rates.
2008-08-11 19:29:04.283 Unknown video codec: H.264
2008-08-11 19:29:04.284 Transcoding
/store/mythtv/recordings/7940_20080810224700.mpg failed
2008-08-11 19:29:04.305 Deleting
/store/mythtv/recordings/7940_20080810224700.mpg.tmp
2008-08-11 19:29:04.315 JobQueue: Transcode Errored: A LIttle Later: KT
Tunstall: High Quality (exit status 255, job status was "Errored")

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belcampo at zonnet

Aug 12, 2008, 8:44 AM

Post #2 of 2 (3285 views)
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Re: Mythtranscode and H.264 [In reply to]

Robert wrote:
> Hi,
>
> Trying to losslessly transcode BBC HD h.264 -> h.264 to cut the start and
> end from a recording. Mythtranscode dies saying "Unknown video codec:
> H.264" (more log stuff below)
>
> Reading this thread from a few months ago
> [http://www.gossamer-threads.com/lists/mythtv/users/325822] it "doesn't
> work". I was wondering if anything was being done to make it work? Or is
> there another way I can chop up H.264 recordings?
The way I do it:
ffmpeg -i source.mpg -vcodec copy -acodec copy -f mpeg
source-withtimestamps-thatstartatzero.mpg
ffmpeg -i source-withtimestamps-thatstartatzero.mpg -ss first
calculatetime(4611/25) -vframes firstcalculate(16586-4611) -vcodec copy
-acodec copy -f mpeg choppedup.mpg
>
> Thanks,
> Robert.
>
>
> 2008-08-11 19:29:03.952 Transcoding from
> /store/mythtv/recordings/7940_20080810224700.mpg to
> /store/mythtv/recordings/7940_20080810224700.mpg.tmp
> 2008-08-11 19:29:03.960 Connecting to backend server: 192.168.0.104:6543
> (try 1 of 5)
> 2008-08-11 19:29:03.965 Using protocol version 40
> 2008-08-11 19:29:03.966 MainServer::HandleAnnounce Monitor
> 2008-08-11 19:29:03.973 adding: quad as a client (events: 0)
> 2008-08-11 19:29:03.986 MainServer::HandleAnnounce Monitor
> 2008-08-11 19:29:03.997 adding: quad as a client (events: 1)
> 2008-08-11 19:29:04.230 AFD: Opened codec 0xb3d20fb0, id(H264) type(Video)
> 2008-08-11 19:29:04.236 AFD: codec MP3 has 2 channels
> 2008-08-11 19:29:04.237 AFD: Opened codec 0xb3d215a0, id(MP3) type(Audio)
> 2008-08-11 19:29:04.237 AFD: codec AC3 has 2 channels
> 2008-08-11 19:29:04.238 AFD: Opened codec 0xb3d276d0, id(AC3) type(Audio)
> 2008-08-11 19:29:04.256 Honoring the cutlist while transcoding
> 2008-08-11 19:29:04.257 Cutlist : 0-4611,16586-19428
> 2008-08-11 19:29:04.267 Original Length: 19428 frames
> 2008-08-11 19:29:04.268 New Length : 11975 frames
> 2008-08-11 19:29:04.269 Found video height of 1088. This is unusual and
> more than likely the video is actually 1080 so mythtranscode will treat it
> as such.
> 2008-08-11 19:29:04.281 SampleRate: Attempted to add a rate 32000 Hz,
> which is not in the list of allowed rates.
> 2008-08-11 19:29:04.283 Unknown video codec: H.264
> 2008-08-11 19:29:04.284 Transcoding
> /store/mythtv/recordings/7940_20080810224700.mpg failed
> 2008-08-11 19:29:04.305 Deleting
> /store/mythtv/recordings/7940_20080810224700.mpg.tmp
> 2008-08-11 19:29:04.315 JobQueue: Transcode Errored: A LIttle Later: KT
> Tunstall: High Quality (exit status 255, job status was "Errored")
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users [at] mythtv
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users

_______________________________________________
mythtv-users mailing list
mythtv-users [at] mythtv
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users

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