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 Tue, 18 Aug 2026 07:19:25 GMT vBulletin 60 https://forum.videohelp.com/images/misc/rss.png VideoHelp Forum - Video Conversion https://forum.videohelp.com/ How to make measurement outcome written into file? https://forum.videohelp.com/threads/420997-How-to-make-measurement-outcome-written-into-file?goto=newpost Sun, 16 Aug 2026 12:44:47 GMT I want to have the results from this measurement be written into a file but it does not work. The file is created but is empty:

Code:

frame1 = src.Crop(1100, 590, 100, 250)
frame1.WriteFile ( "C:\avisynth\frame1_stats.txt", "Y_avg=", "AverageLuma", flush=true)
]]> Video Conversion Bencuri https://forum.videohelp.com/threads/420997-How-to-make-measurement-outcome-written-into-file Open Source PS5 Media Gallery Converter / Batch Tool https://forum.videohelp.com/threads/420993-Open-Source-PS5-Media-Gallery-Converter-Batch-Tool?goto=newpost Sun, 16 Aug 2026 03:53:14 GMT I've been developing some software. I used an early version to test an edit for Willy Wonka and decided to open-source it. It's great for checking how your edit looks on different screens. The PS5 was the easiest for me, even though I know other consoles support a wider set of codecs. I hope other people who find themselves in a similar situation to me can use this to watch their stuff on the PlayStation. I'm aware of similar applications, including Handbrake, but I found this is fast, easy, and simple, especially if you're trying to do several different video files at once.

If you've ever tried playing custom video files or edits on a PS5 via USB, you know how picky the Media Gallery app is with codecs and header indexing. I built a lightweight Python/FFmpeg tool with file/folder dialogs that automatically standardizes videos into PS5-compliant MP4s.

It's open source and free on GitHub (or as a standalone .exe under Releases). I also have a bigger application with a fully functional GUI coming soon. Keep an eye out for it.

https://github.com/Nathan398/ps5-video-converter

I've been working in video production for a while, using libraries and such to help with my production. I used some AI here, and I know this is essentially just a wrapper, but it's simple and useful for people trying to watch files on their PS5. I have a lot of work I've done not using AI as well, and I am generally creative, so I hope that those who feel demoralized try seeing how they can grow creatively without AI, and see what they can do to improve their current workflow using AI (which is essentially what I've done). ]]> Video Conversion nathan398 https://forum.videohelp.com/threads/420993-Open-Source-PS5-Media-Gallery-Converter-Batch-Tool Why b frames not does less file size ? https://forum.videohelp.com/threads/420970-Why-b-frames-not-does-less-file-size?goto=newpost Mon, 10 Aug 2026 14:23:55 GMT Thanks for reading my topic. Here is Linux Lubuntu 24.04.3 kernel 6.14 using a GT 640 driver 470. I see in some sources b frames does better compression than I and P frames ... well .. in that logic the bitrate is less than P frames, but not are being exactly it. When converting using nvenc... Thanks for reading my topic.
Here is Linux Lubuntu 24.04.3 kernel 6.14 using a GT 640 driver 470.
I see in some sources b frames does better compression than I and P frames ... well .. in that logic the bitrate is less than P frames, but not are being exactly it.
When converting using nvenc the file is the same size with and without b frames even using a good value for GOP.
In Nvidia Nvenc doc has the information
"B-frames are great because they increase image quality, but they consume a lot of your available bitrate, so they reduce quality on high motion content"
If b frames does better compression had to be a less file size.
I see another issue using b frames ... in scenes with much motion and fade in out does issues in video quality.
Really using b frames for video archiving is a good solution or is better only using I and P frames ?
I see much artifacts when converting from xvid to H264 too.
Have a nice week. ]]> Video Conversion Aug https://forum.videohelp.com/threads/420970-Why-b-frames-not-does-less-file-size Why enconding using NVENC the file size is bigger than x264 ? https://forum.videohelp.com/threads/420969-Why-enconding-using-NVENC-the-file-size-is-bigger-than-x264?goto=newpost Mon, 10 Aug 2026 14:23:06 GMT Thanks for reading my topic. Here is Linux Lubuntu 24.04.3 kernel 6.14 using a GT 640 driver 470. I see when enconding using nvenc (https://www.videohelp.com/software/NVEnc) the file is much more big than if using x264 cpu enconding. Why happen it ? I have tested using and disabling b frames... Thanks for reading my topic.
Here is Linux Lubuntu 24.04.3 kernel 6.14 using a GT 640 driver 470.
I see when enconding using nvenc the file is much more big than if using x264 cpu enconding.
Why happen it ?
I have tested using and disabling b frames and is the same result.
Have a nice week. ]]> Video Conversion Aug https://forum.videohelp.com/threads/420969-Why-enconding-using-NVENC-the-file-size-is-bigger-than-x264 FFMPEG Script for AVI 4:2:2 h.264 https://forum.videohelp.com/threads/420964-FFMPEG-Script-for-AVI-4-2-2-h-264?goto=newpost Sun, 09 Aug 2026 06:38:03 GMT Looking for recommendations on a high quality ffmpeg (https://www.videohelp.com/software/ffmpeg) scripts for encoding both 50p and 60p large HuffYUV (https://www.videohelp.com/software/HuffYUV) (392 Mb/s) 4:2:2 8bit YUV AVI files that are already resized to 1440x1080 and converted to rec.709 during... Looking for recommendations on a high quality ffmpeg scripts for encoding both 50p and 60p large HuffYUV (392 Mb/s) 4:2:2 8bit YUV AVI files that are already resized to 1440x1080 and converted to rec.709 during output, Audio is 48Khz 16bit, Encoding only, Looking for good 4:2:0 video quality and decent compressed audio. ]]> Video Conversion dellsam34 https://forum.videohelp.com/threads/420964-FFMPEG-Script-for-AVI-4-2-2-h-264 VSDC convert MPG file 25fps (50i-60i) to MP4 60fps https://forum.videohelp.com/threads/420955-VSDC-convert-MPG-file-25fps-%2850i-60i%29-to-MP4-60fps?goto=newpost Thu, 06 Aug 2026 16:41:15 GMT Hi, with MAGIX Video Deluxe (https://www.videohelp.com/software/Magix-Video-Deluxe) Premium I was able to convert 25fps MPG video file that, when viewed in the player, show 50i or 60i; and I was able to convert them to 60fps MP4s with ease. However, things are different with VSDC Free Video Editor... Hi, with MAGIX Video Deluxe Premium I was able to convert 25fps MPG video file that, when viewed in the player, show 50i or 60i; and I was able to convert them to 60fps MP4s with ease. However, things are different with VSDC Free Video Editor: why doesn't this program convert to 60fps? What did I do wrong, or what didn't the program set up correctly? I'm waiting for your response to understand what happened with this method. Thanks. Here's info with attached from original MPG file:

Complete name: Video.mpg
Format: MPEG-PS
File size: 192 MiB
Duration: 6 min 17 s
Overall bit rate mode: Variable
Overall bit rate: 4 262 kb/s
Frame rate: 25.000 FPS
Writing library: MPEG1_RT_BS

Video
ID: 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, GOP: M=3, N=13
Format settings, picture st: Frame
Duration: 6 min 17 s
Bit rate mode: Variable
Bit rate: 4 000 kb/s
Width: 720 pixels
Height: 576 pixels
Display aspect ratio: 4:3
Frame rate: 25.000 FPS
Standard: PAL
Color space: YUV
Chroma subsampling: 4:2:0
Bit depth: 8 bits
Scan type: Interlaced
Scan order: Top Field First
Compression mode: Lossy
Bits/(Pixel*Frame): 0.386
Time code of first frame: 00:00:00:00
Time code source: Group of pictures header
GOP, Open/Closed: Closed
Stream size: 179 MiB (93%)
Writing library: MPEG1_RT_BS
Color primaries: BT.601 PAL
Transfer characteristics: BT.470 System B/G
Matrix coefficients: BT.470 System B/G

Audio
ID: 192 (0xC0)
Format: MPEG Audio
Format version: Version 1
Format profile: Layer 2
Format settings: Joint stereo / Intensity Stereo + MS Stereo
Duration: 6 min 17 s
Bit rate mode: Constant
Bit rate: 192 kb/s
Channel(s): 2 channels
Sampling rate: 44.1 kHz
Frame rate: 38.281 FPS (1152 SPF)
Compression mode: Lossy
Delay relative to video: -129 ms
Stream size: 8.64 MiB (5%)
Attached Files
]]> Video Conversion MJKUEIL https://forum.videohelp.com/threads/420955-VSDC-convert-MPG-file-25fps-%2850i-60i%29-to-MP4-60fps How to get best quality for AVCHD to MPEG-2 for DVD https://forum.videohelp.com/threads/420952-How-to-get-best-quality-for-AVCHD-to-MPEG-2-for-DVD?goto=newpost Wed, 05 Aug 2026 19:20:11 GMT I have 1080P footage that I need to convert to NTSC (widescreen) MPEG-2 for DVD authoring. I use Vegas for my NLE, but I don't like the resultant quality encoding to MPEG-2 from Vegas, probably because of whatever resizing algorithm the main concept encoder uses. I can encode a ProRes intermediary, and then use another tool to convert that to MPEG-2. AI suggested using Hybrid, along with Shutter encoder. I took one look at Hybrid and ran, looks very complicated! Is there some easier workflow available where I can try other resizing algorithms and/or other tools? ]]> Video Conversion sdsumike619 https://forum.videohelp.com/threads/420952-How-to-get-best-quality-for-AVCHD-to-MPEG-2-for-DVD Best Way to De-interlace HDV https://forum.videohelp.com/threads/420949-Best-Way-to-De-interlace-HDV?goto=newpost Tue, 04 Aug 2026 20:11:30 GMT I'm trying to work on some HDV files to put on YT so they don't get screwed up by YT de-interlacing algorithm, I'm taking the long way trying to preserve the quality, I want to know if there are quicker methods that result in less quality degradation, Here is what I'm doing so far:

- Input the 4:2:0 1080i HDV file into vdub2 to strip the mpeg-2 codec saving as 4:2:2 HuffYUV AVI (not sure if 10bit can make a difference here, so I'm just using 8bit).
- Input the resulting large file into AVSpmod and de-interlace with QTGMC in fast mode, followed by a resize in the second line from 1440x1080 to 1920x1080 to preserve the 16:9 aspect ratio.
- Upload the second resulting file into YT and let it do the encoding.
- Delete all the files but the original HDV source. ]]> Video Conversion dellsam34 https://forum.videohelp.com/threads/420949-Best-Way-to-De-interlace-HDV Can you remove green background with Avisynth? https://forum.videohelp.com/threads/420939-Can-you-remove-green-background-with-Avisynth?goto=newpost Mon, 03 Aug 2026 15:11:35 GMT I am trying to remove the green background from this video with Vegas (https://www.videohelp.com/software/Vegas), but no success. See the attached mask. You can see the problem is that Vegas considers my fingers be part of the backgorund. And this is what you can see infuelncing the outcome. I can... I am trying to remove the green background from this video with Vegas, but no success. See the attached mask. You can see the problem is that Vegas considers my fingers be part of the backgorund. And this is what you can see infuelncing the outcome. I can set the balance so that the background is visible and also me, but around my hand the two overlaps and the background silhouettes are visible.

Can you remove this more effectively with avisynth? I know the video is not optimal either. The problem is that in the room where the green wall is, if I turn on lights, there will be a shadow appearing on the wall. If I place led light source in front of me on the floor, with the LED panel facing upwards, the shadow goes but I only have 1 panel, and if I place more, it would cast another shadow anyway I think. So these are the conditons that you can see on the video where I can avoid shadows.

Clip attached.
Attached Thumbnails
Click image for larger version Name: green mask.JPG Views: N/A Size: 26.9 KB ID: 93260  

Attached Files
]]> Video Conversion Bencuri https://forum.videohelp.com/threads/420939-Can-you-remove-green-background-with-Avisynth Interest in a Mac GUI for FFmpeg that handles HDR/SDR/GeneralConversions ? https://forum.videohelp.com/threads/420932-Interest-in-a-Mac-GUI-for-FFmpeg-that-handles-HDR-SDR-GeneralConversions?goto=newpost Sun, 02 Aug 2026 14:59:02 GMT I've written a GUI app that I use to do HDR to SDR conversions, and have added features to it for the last couple of years for general conversions from one format to anther. Its written for Apple silicon in Swift, and it works with FFmpeg as well as utilizing fprobe if you have it. Lets you select any specific FFmpeg binary if you have multiple versions or just uses whatever is in our PATH, does audio normalization, supports VideoToolBox acceleration where applicable, H.264, H.265, and AV1 output. It will support any input that FFmpeg does. It also has some simple controls for gamma and hue, supports 6 different HDR color mapping algorithms, upscaling, downscaling (Bicubic or Lanczos), cropping/auto-cropping, Filtering (HQDN3D, NLMeans, BM3D, CAS, and Unsharp), audio normalizing via LoudNorm including 2-pass analysis on audio if needed, audio conversion/mapping as well as setting default audio track, subtitles (SRT/TXT and burn in for PGS supported), Queue support, and quick samples.

I've put a lot of work into it, and was thinking of paying for an apple developer license to sell in the App Store. I figure a $2-$5 for the software. No plans for subscriptions or any of that nonsense, and I don't want to mess with maintaining a website. I found the command line a bit tedious trying to get the tone mapping right, mapping audio tracks for sources with 5 different audio tracks, various subtitles, and whatnot all just a pain, so wrote this initially for a simple one-click HDR to SDR.It just kind of expanded from there as I added functionality to it.

Do you think anyone would be interested in yet another GUI for FFmpeg? ]]> Video Conversion DJRumpy https://forum.videohelp.com/threads/420932-Interest-in-a-Mac-GUI-for-FFmpeg-that-handles-HDR-SDR-GeneralConversions Help removing diagonal lines across Video8 image, probable interference? https://forum.videohelp.com/threads/420904-Help-removing-diagonal-lines-across-Video8-image-probable-interference?goto=newpost Sun, 26 Jul 2026 08:24:32 GMT I received a transfer of a Video8 tape which throughout I can see faint diagonal lines across the whole image, through most of the video. At some points it also seems to go in both diagonals. You can't really see them at smaller sizes but they're very obvious at larger viewing windows. They're most obvious over the large drape backdrop, but also still slightly over the people.

The exact transfer chain was:

Sony CCD-TRV66E > S-Video > DataVideo TBC-1000 > ATI TV Wonder 600 USB > VirtualDub 1.10.4 > ffmpeg (FFV1)

The tape had been transferred before but I only ever had a smudgy encoded MPEG-2 DVD, so I don't know if they were always there but I suspect not. They seem like interference somewhere in the capture chain to me, perhaps from the mains. It was transferred in France FWIW.

Either way, a new transfer is not currently possible, at least not any time soon, so I was wondering if there was any way I could reduce these a little without softening the overall image too much?

Image
[Attachment 93194 - Click to enlarge]
Attached Files
]]> Video Conversion Killer3737 https://forum.videohelp.com/threads/420904-Help-removing-diagonal-lines-across-Video8-image-probable-interference Reverse Engineering an Unknown AVI Codec (SP34 FOURCC) https://forum.videohelp.com/threads/420897-Reverse-Engineering-an-Unknown-AVI-Codec-%28SP34-FOURCC%29?goto=newpost Fri, 24 Jul 2026 23:04:05 GMT Hello,

I'm trying to identify an old AVI video codec that uses the FOURCC SP34.

Background

Between 2001 and 2002, I recorded many videos using an external webcam connected to an IBM ThinkPad laptop.

At the time, all original AVI files played perfectly on my computer.

In 2004, I recompressed almost all of the videos to reduce their file size and then deleted the original files.

The recompressed videos also played correctly on my computer for several years.

However, after replacing my computer and reinstalling Windows, the videos could no longer be played because modern software cannot decode the video stream.

Unfortunately, I do not remember which software or codec I used for the recompression.

Reference File

One AVI file was apparently never recompressed and still works correctly.

Properties

AVI
Video codec: Cinepak (cvid)
Resolution: 320×240
15 fps
PCM unsigned 8-bit audio (11025 Hz)
Recompressed Files

The remaining AVI files have these properties:

AVI container
Video FOURCC: SP34
Resolution:
mostly 320×240
some 160×120
15 fps
PCM unsigned 8-bit audio (11025 Hz)

The audio plays correctly.

The video does not.


VLC

VLC reports:

Codec "SP34"
No suitable decoder module found.


FFmpeg

FFmpeg reports:

Unknown codec: SP34

No AVI container corruption is reported.

The files appear structurally valid.

What I Have Already Verified
AVI container is valid (RIFF / hdrl / movi / idx1).
Audio stream is intact.
File durations are correct.
File sizes are reasonable.
Microsoft FOURCC documentation contains no SP34 entry.
FOURCC.org also contains no SP34 entry.
My Questions
Has anyone ever encountered the SP34 FOURCC?
Could this be an old Video for Windows (VfW) codec?
Could it have been installed by an IBM webcam driver or another webcam application?
Does anyone have an old codec DLL registering VIDC.SP34?
Is there any known way to identify the actual codec behind this FOURCC?
Available for Analysis

I can provide:

A working Cinepak AVI file.
One or more SP34 AVI samples.
MediaInfo output.
FFmpeg/ffprobe output.
Hex dumps if needed.

Any help identifying this codec or recovering these AVI files would be greatly appreciated.

Thank you. ]]> Video Conversion enegis https://forum.videohelp.com/threads/420897-Reverse-Engineering-an-Unknown-AVI-Codec-%28SP34-FOURCC%29 VHS deinterlacing issue https://forum.videohelp.com/threads/420895-VHS-deinterlacing-issue?goto=newpost Fri, 24 Jul 2026 21:35:54 GMT I'm bob deinterlacing a Japanese VHS tape to 59.94 fps using QTGMC in Hybrid and ran into an issue I've never encountered before. The intro and outro scenes are top field first but the rest of the tape seems to be a different field order that I can't figure out.
Setting input scan type to TFF results in a ghosting/shifting effect on every other frame instead of continuous motion. The other input scan types that output 59.94 fps don't look right either. It's hard to explain but I've attached a clip.
Is my only option to use interpolation to achieve smooth 59.94 fps or is there something else I'm missing?
Attached Files
]]> Video Conversion Jin Kyoichiro https://forum.videohelp.com/threads/420895-VHS-deinterlacing-issue