VideoHelp Forum - Video Conversion https://forum.videohelp.com/ Everything about video conversion from AVI, DivX, XVID, FLV, ASF, MPG, MOV, RM, MP4, MKV, MP4, OGM, WMV,AVCHD, HDV, DV, MJPEG, Huffyuv, MPEG2, MTS, M2TS,etc to any video format. Also demultiplexing, multiplexing, video repairing issues. en Thu, 21 May 2026 13:28:56 GMT vBulletin 60 https://forum.videohelp.com/images/misc/rss.png VideoHelp Forum - Video Conversion https://forum.videohelp.com/ video merge problem https://forum.videohelp.com/threads/420570-video-merge-problem?goto=newpost Tue, 19 May 2026 13:45:19 GMT Hi, I have a video merge problem. Two segments of videos, say A and B, a few seconds at the end of A and at the beginning of B are exactly the same. I want to merge them into a perfect video (cut off the duplicate part and play smoothly). I don't know the exact seconds of the duplicate part lasts. Is there any software or AI to solve the problem?;) ]]> Video Conversion ssuper2gg https://forum.videohelp.com/threads/420570-video-merge-problem is it possible to encode Apple HE-AAC v2 on Windows? https://forum.videohelp.com/threads/420549-is-it-possible-to-encode-Apple-HE-AAC-v2-on-Windows?goto=newpost Wed, 13 May 2026 21:27:35 GMT Hi, I would like to know if it's possible to use Apple HE-AAC v2 on Windows? And how to achieve that?

Thanks for any help :) ]]> Video Conversion geextah_2 https://forum.videohelp.com/threads/420549-is-it-possible-to-encode-Apple-HE-AAC-v2-on-Windows <![CDATA[Sharing a video tool I've been building for Mac and Windows]]> https://forum.videohelp.com/threads/420531-Sharing-a-video-tool-I-ve-been-building-for-Mac-and-Windows?goto=newpost Sun, 10 May 2026 23:39:27 GMT I wanted to share a project I’ve been working on. It started out as just a simple way for me to handle FFmpeg (https://www.videohelp.com/software/ffmpeg) conversions, but over the last 6 months, it’s evolved into a much bigger video editing platform. I’ve put a ton of time into getting... I wanted to share a project I’ve been working on.

It started out as just a simple way for me to handle FFmpeg conversions, but over the last 6 months, it’s evolved into a much bigger video editing platform.

I’ve put a ton of time into getting some specific features working that I couldn't find elsewhere, like: Black and White "Filmic" conversions for any footage. Built-in yt-dlp downloading. Proper GoPro and iPhone imports (getting the iPhone import to play nice with Windows 11 was a massive headache compared to Mac, but it’s finally stable).

Since I've put so much of my own time into the development, it is a paid tool, but I’ve tried to make it handle the stuff that usually requires three different apps to get done.

If you’re interested in the "why" behind it or how it works, I’ve put the guides and the philosophy here:

https://ffmpegcommander.com

Build by a Gen-Xer / most of my clients are also in that age group and they better understand what I have build.

Happy to answer any questions if anyone is curious about the tech behind it. Thanks! ]]> Video Conversion rompstar https://forum.videohelp.com/threads/420531-Sharing-a-video-tool-I-ve-been-building-for-Mac-and-Windows Audio shifts on rendering - do I need to compensate? https://forum.videohelp.com/threads/420492-Audio-shifts-on-rendering-do-I-need-to-compensate?goto=newpost Sun, 03 May 2026 22:25:12 GMT This is something I noticed in Sony Vegas (https://www.videohelp.com/software/Vegas): you are ready with the project, do rendering to mp4 format. What I actually do is render the video by Debugmode Frameserver (https://www.videohelp.com/software/Debugmode-FrameServer). Load the rendered video in... This is something I noticed in Sony Vegas: you are ready with the project, do rendering to mp4 format. What I actually do is render the video by Debugmode Frameserver. Load the rendered video in Vegas, the old and the rendered line up perfectly. Every frame matches. Then I render the audio in aac, mux the rendered video and audio. Loading back to Vegas, the rendered audio is shifted compared to the old. If I compensate this shifting the audio before rendering, the new and old lines up perfectly.

Do I need to do this shifting before rendering, or the misalignment is only a glitch in Vegas, and in reality, the audio will play on time even if it appears shifted after rendering? Is there any way to objectively examine the position of the audio in the rendered file after muxing? ]]> Video Conversion Bencuri https://forum.videohelp.com/threads/420492-Audio-shifts-on-rendering-do-I-need-to-compensate Moldy 8mm cassette - Boston area? https://forum.videohelp.com/threads/420485-Moldy-8mm-cassette-Boston-area?goto=newpost Sat, 02 May 2026 16:29:37 GMT Does anyone know of a vendor/person who cleans and captures 8mm video (moldy) cassettes? I am aware of Specs but this client was hoping for a semi-local person. It's a fairly moldy tape and I'm not prepared to deal with it, I do not have a sacrificial camcorder/player either.
Boston to Providence area would be helpful. ]]> Video Conversion Barrythecrab https://forum.videohelp.com/threads/420485-Moldy-8mm-cassette-Boston-area RIFE Not Interpolating During Fast Panning https://forum.videohelp.com/threads/420482-RIFE-Not-Interpolating-During-Fast-Panning?goto=newpost Sat, 02 May 2026 12:46:17 GMT I have a short piece of H264 video shot with my phone in UHD 30fps Variable. I have exported it to a 30fps Constant FR AVI for processing.

I started off with the phone virtually stationary, then panned, and then slowed down the pan to stop. What I've found is this:

Slow movements at the start have been interpolated nicely. But as the panning speed increases, the interpolation stops and I get motion every 2nd frame. Then, at the end, as I slow down the pan to almost stopped, the interpolation kicks in again.

Here's my code:

Code:
AVISource("F:\Fete\End pan 30fps.avi")
ConvertToYV16

z_ConvertFormat(pixel_type="RGBPS", colorspace_op="709:709:709:l=>rgb:709:709:f")
Rife(gpu_thread=1, model=71, fps_num=60000, fps_den=1000, uhd=true, sc=true, sc_threshold=0.12)
z_ConvertFormat(pixel_type="YUV420P8", colorspace_op="rgb:709:709:f=>709:709:709:l")
For privacy reasons I can't post the file but if necessary, will try to make another tomorrow to try to simulate this problem file.

I have tried various models but with no luck. I also tried Frame Rate Converter but it was throwing up blended frames.

I'd really appreciate any suggestions you could provide or comments; is this a characteristic of RIFE with UHD? ]]> Video Conversion Alwyn https://forum.videohelp.com/threads/420482-RIFE-Not-Interpolating-During-Fast-Panning from DVD to youtube = too dark due to colorspace https://forum.videohelp.com/threads/420481-from-DVD-to-youtube-too-dark-due-to-colorspace?goto=newpost Sat, 02 May 2026 08:10:12 GMT So I'm trying to upload a 2 minute video from DVD to youtube, but youtube makes the video way too dark, as it doesn't handle the colorspace of my DVD (BT601 + BT470) correctly.

How to properly encode the video with:
a) convert colorspace so that youtube keeps the brightness the same
b) crop the borders
c) upscale to 4K, otherwise youtube uses too low bitrate and the quality suffers a lot
d) deinterlace (bob)

with a single ffmpeg command if possible.
Should be easier to do steps b+c with avisynth though.

1 second clip (remuxed to mkv) for testing: https://file.kiwi/be4011dc#xFN_FfS3qeU-0MhilMSv3g

If I convert to BT709 or BT601 with Handbrake the video brightness is much better after uploaded to youtube, but still a bit darker than the original (e.g. if BT.601 EBU (=PAL) is selected in Handbrake, mediainfo reports: Color primaries : BT.601 PAL Transfer characteristics : BT.709 Matrix coefficients : BT.601).

I also tried with Handbrake colorspace custom format with the following valuers, which gets the correct brightness in youtube:
primaries="bt601-6-525":transfer="bt709":matrix="bt601-6-525"
For the resulting file Mediainfo only reports: Transfer characteristics : BT.709" and omits color primaries and matrix coefficients.
The problem with this custom colorspace is that it doesn't work when upscaling is enabled. For some reason it also shifts the image a few pixels rightwards.

Mediainfo for the original clip (remux from DVD):
Mediainfo:
Code:
General
Unique ID                  : 223809982403398840198480831573644245518 (0xA8603C150F55CC35DF691D67C2337A0E)
Complete name              : clip.mkv
Format                      : Matroska
Format version              : Version 4
File size                  : 934 KiB
Duration                    : 1 s 344 ms
Overall bit rate mode      : Constant
Overall bit rate            : 5 693 kb/s
Frame rate                  : 51 119.792 FPS
Writing application        : Lavf62.13.102
Writing library            : Lavf62.13.102
ErrorDetectionType          : Per level 1

Video
ID                          : 1
ID in the original source m : 224 (0xE0)
Format                      : MPEG Video
Format version              : Version 2
Format profile              : Main@Main
Format settings            : BVOP
Format settings, BVOP      : Yes
Format settings, Matrix    : Default
Format settings, picture st : Frame
Codec ID                    : V_MPEG2
Codec ID/Info              : MPEG 1 or 2 Video
Duration                    : 1 s 344 ms
Bit rate mode              : Constant
Bit rate                    : 5 600 kb/s
Width                      : 720 pixels
Height                      : 576 pixels
Display aspect ratio        : 4:3
Frame rate mode            : Variable
Frame rate                  : 51 119.792 FPS
Original frame rate        : 25.000 FPS
Standard                    : PAL
Color space                : YUV
Chroma subsampling          : 4:2:0
Bit depth                  : 8 bits
Scan type                  : Interlaced
Scan type, store method    : Separated fields (2 fields per block)
Scan order                  : Top Field First
Compression mode            : Lossy
Bits/(Pixel*Frame)          : 0.000
Time code of first frame    : 00:38:38:01
Time code source            : Group of pictures header
Stream size                : 1.79 GiB
Language                    : English
Default                    : No
Forced                      : No
Color range                : Limited
Color primaries            : BT.601 PAL
Transfer characteristics    : BT.470 System B/G
Matrix coefficients        : BT.470 System B/G
Original source medium      : DVD-Video

Audio
ID                          : 2
ID in the original source m : 189 (0xBD)128 (0x80)
Format                      : AC-3
Format/Info                : Audio Coding 3
Commercial name            : Dolby Digital
Codec ID                    : A_AC3
Duration                    : 1 s 248 ms
Bit rate mode              : Constant
Bit rate                    : 192 kb/s
Channel(s)                  : 2 channels
Channel layout              : L R
Sampling rate              : 48.0 kHz
Frame rate                  : 31.250 FPS (1536 SPF)
Bit depth                  : 32 bits
Compression mode            : Lossy
Delay relative to video    : -24 ms
Stream size                : 62.9 MiB
Title                      : Stereo
Language                    : Finnish
Service kind                : Complete Main
Default                    : Yes
Forced                      : No
Original source medium      : DVD-Video
Dialog Normalization        : -27 dB
compr                      : 1.02 dB
dynrng                      : 0.78 dB
dialnorm_Average            : -27 dB
dialnorm_Minimum            : -27 dB
dialnorm_Maximum            : -27 dB

Menu
00:00:00.000                : Chapter 16
00:01:53.940                : Chapter 17
00:08:10.940                : Chapter 18
]]> Video Conversion Danic https://forum.videohelp.com/threads/420481-from-DVD-to-youtube-too-dark-due-to-colorspace any mencoder tips for better dvd mpeg2video https://forum.videohelp.com/threads/420460-any-mencoder-tips-for-better-dvd-mpeg2video?goto=newpost Mon, 27 Apr 2026 23:21:47 GMT im wondering if theres any better mix of setting for nicer video this is what i use right now... im wondering if theres any better mix of setting for nicer video this is what i use right now
"threads=2:vcodec=mpeg2video:vrc_buf_size=1835:vrc _maxrate=6000:vbitrate=5000:keyint=18:trell:mbd=2: precmp=3:subcmp=3:cmp=3:dia=-10:predia=-10:preme=1:last_pred=3:o=mpv_flags=+cbp_rd:o=mpv_f lags=+mv0:o=lmin=1*QP2LAMBDA:dc=10:vstrict=0:acode c=ac3:abitrate=192:aspect=4/3:vpass=1" ]]> Video Conversion Anonymous Goldfish https://forum.videohelp.com/threads/420460-any-mencoder-tips-for-better-dvd-mpeg2video