Converting 8fps mpeg4 back to 25fps mpeg4

[Lynden]

I'm quite new to all this but long story short, I captured home video from those small DVDs from a DVD camcorder with Handbrake software. Then when I open them in pinnacle 15 editing program some of them are in slow motion and upon closer inspection is running at between 7 and 9 fps apposing to to the others running normally at 25fps. Is there any way of converting the mpeg 4 back to 25 fps using handbrake?? The original DVDs are lost. Will be gratefull for any help.

[Baldrick]

How does it look if you just set the framerate to 25fps in handbrake(under the video tab and framerate), convert it and try play it?

[Lynden]

Thanx for prompt reply! If I open the respective files's properties details , the frame rate shows 24 fps but when I open it in pinnacle it shows 7.69 fps. Also the mpeg 4 file plays fine in windows media player but the problem is only when I try opening it in pinnacle.

[Baldrick]

You could try "remux" the files. For example try mp4camtoavi for mp4 files. Open the avi in pinnacle.

If it wont work then post the full details from the video. Use mediainfo, open video, view->text and copy the information.

[Lynden]

Thanx !! I'll try that tonight.

[Lynden]

I converted the mp4 to avi but apart from losing alot of quality and 16:9 view, pinnacle 15 did not want to open it.
This is all the info as described by Mediainfo:
Hope this helps...


General
Complete name : C:\Users\User\Videos\Home dvds\Must Recapture\2012 07 15 09h56m Am-1.m4v
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 200 MiB
Duration : 23mn 39s
Overall bit rate mode : Variable
Overall bit rate : 1 179 Kbps
Encoded date : UTC 2012-08-10 18:52:51
Tagged date : UTC 2012-08-10 19:12:32
Writing application : HandBrake 0.9.6 2012022800

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.0
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 23mn 39s
Bit rate mode : Variable
Bit rate : 1 015 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 24.806 fps
Minimum frame rate : 7.692 fps
Maximum frame rate : 25.000 fps
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.099
Stream size : 172 MiB (86%)
Writing library : x264 core 120
Encoding settings : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=2 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=10 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=3 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2012-08-10 18:52:51
Tagged date : UTC 2012-08-10 19:12:32
Color primaries : BT.601 NTSC
Transfer characteristics : BT.709
Matrix coefficients : BT.601

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 23mn 39s
Bit rate mode : Variable
Bit rate : 160 Kbps
Maximum bit rate : 205 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : 180ms
Stream size : 27.1 MiB (14%)
Encoded date : UTC 2012-08-10 18:52:51
Tagged date : UTC 2012-08-10 19:12:32

Text
ID : 3
Format : Apple text
Codec ID : text
Duration : 23mn 39s
Bit rate mode : Variable
Bit rate : 1 bps
Stream size : 231 Bytes (0%)
Encoded date : UTC 2012-08-10 18:52:51
Tagged date : UTC 2012-08-10 19:12:32

General
Complete name : C:\Users\User\Videos\Home dvds\Must Recapture\Thumbs.db
File size : 13.5 KiB

[jagabo]

Try use Mp4Muxer to remux to MP4 with the frame rate you want. First use the Demux option to demux the streams, then use the Mux tool to remux them.

[poisondeathray]

Frame rate mode : Variable
Frame rate : 24.806 fps
Minimum frame rate : 7.692 fps
Maximum frame rate : 25.000 fps

You used VFR (variable framerate) with handbrake - next time use CFR (constant framerate) if you plan on doing farther editing. All Editing programs run CFR, so you will get sync issues trying to edit it as is unless you convert to CFR

Just forcing the frame rate won't work, because you are missing frames compared to the original. It will go out of sync if you force a constant 25p because the video will be too short for the audio

You can try to insert duplicate frames in approximately the correct positions with avisynth's DirectShowSource and ConvertFPS=true . It might go slightly in and out of sync depending on how variable the FPS was in sections. What handbrake did was throw away frames where there was little to no motion, all you're trying to do is put them back. Of course it's not perfect.

e.g.
DirectShowSource("video.mp4", fps=25, convertfps=true)

You might use this avs script in vdub to encoded to a lossless intermediate (e.g. lagarith, huffyuv, ut video codec) to import into your editor