In-Depth Video Quality Analysis

Go deep into video quality with bitstream-level analysis, no-reference metrics, and ITU-standardized models.

For content providers, broadcasters, system integrators, and anyone who needs to understand video quality at the encoding and transcoding level. Analyze encoded video without reference content using ITU-T P.1204.3 and our own no-reference bitstream models.

Contact us

The Challenge

Surface-level metrics miss encoding and transcoding quality issues

Bitrate and resolution numbers don't tell you about compression artifacts, encoding errors, or transcoding quality loss. Full-reference models like VMAF require the original content — impractical for monitoring live streams or third-party content. You need quality assessment that works on the encoded stream itself.

Our Approach

No-reference bitstream analysis for scalable quality monitoring

Our video analysis tools inspect the encoded bitstream directly — analyzing codec parameters, frame structures, and compression characteristics to predict perceptual quality without needing the original reference content. Based on ITU-T P.1204.3 and our own NR models, this approach needs much less CPU than pixel-domain analysis and scales to large content catalogs.

VideoAnalyzer interface showing bitstream details and per-frame video quality metrics

Key Capabilities

Inspect encoded streams and catch quality loss at scale

No-Reference Quality Models

Assess video quality using ITU-T P.1204.3 and our own NR bitstream models. No reference content needed — works on encoded files, from on-demand assets to recordings of live channels.

Codec-Level Analysis

Analyze MPEG-1/2, H.264, H.265/HEVC, VP9, and AV1 at the bitstream level, with quality scores for MPEG-2, H.264, H.265, and VP9. Detect encoding anomalies, quality drops, and transcoding errors.

Scalable Analysis

Bitstream-based analysis is lightweight. Analyze large content catalogs without the CPU cost of pixel-domain decoding.

Quality Assurance Pipelines

Integrate into your encoding, transcoding, or delivery pipeline to catch quality issues before they reach viewers.

Product

Surfmeter Media Toolkit

Run this analysis on your own files. One command-line tool gives you bitstream statistics, pixel metrics, ITU-T P.1204.3 scores, and VMAF, PSNR and SSIM against a reference, with a terminal UI to explore the results. Available for Linux, macOS, Windows and Docker.

Explore the Media Toolkit

Proven in Practice

Encoding quality verification for a German TV provider

A German TV content provider needed to verify the quality of transcoded streams across multiple bitrate ladder profiles and encoders, to ensure that the chosen encoder settings delivered actual quality improvements.

Results

Performed automated quality analysis using ITU-T Rec. P.1204.3 bitstrem model
Verified encoding performance improvement for commercial encoder vs. open-source solution

WDR, one of Germany’s largest public broadcasters, uses Surfmeter to monitor the delivery quality of their streaming services from the viewer’s perspective. Beyond continuous CDN performance monitoring, WDR uses Surfmeter to validate new player versions, compare stream configurations, and verify that encoding changes deliver the expected quality improvements before rolling them out to millions of viewers.

Results

Continuous monitoring of CDN delivery quality for WDR’s streaming services
Validated new player versions and stream configurations before rollout
Compared encoding settings and verified quality improvements objectively
Identified delivery issues across different ISPs and regions

Ready to see it in action?

Get a personalized demo and see how Surfmeter fits your use case. It only takes 30 minutes.

Business Benefits

Real outcomes for your business

Catch Encoding Issues Early

Detect quality problems in the transcoding pipeline before content reaches your CDN and viewers.

Scale Quality Monitoring

Check quality across your entire catalog without the computational cost of full-reference analysis.

Standardized Quality Scores

Report quality using ITU-standardized models recognized by the industry, not proprietary scores.

Codec-Agnostic Analysis

Bitstream analysis for MPEG-2, H.264, H.265, VP9, and AV1 covers your technology stack, from broadcast to streaming.

How It Works

How bitstream analysis works

Our tools analyze the encoded video bitstream without reconstructing the pixels of each frame, enabling fast and scalable quality assessment.

1

Load video files

Feed encoded video files into the analysis pipeline: MPEG-TS, MP4/MOV, Matroska/WebM, AVI, or raw elementary streams. Live HLS and DASH input is on our roadmap.

2

Bitstream inspection

The analyzer inspects codec parameters, frame structures, quantization parameters, and compression characteristics at the bitstream level.

3

Quality prediction

ITU-T P.1204.3 and our own NR models compute perceptual quality scores that correlate highly with human ratings — without needing reference content.

4

Report & integrate

Quality scores and detailed analysis data are written as JSON and CSV for integration into your QA dashboard, encoding pipeline, or monitoring system.

Data & KPIs

Video analysis data and metrics

Quality Scores

P.1204 NR MOS

No-reference quality score (1–5)
Per-Frame Quality Score

Quality score for each decoded frame
Temporal Quality Variation

Quality fluctuation over time
Scene Complexity Index

Visual complexity of scene content

Codec Analysis

Codec Type

Video compression format
Quantization Parameters (QP)

Compression strength per frame
Bitrate Profile

Bitrate over time
Frame Rate

Frames rendered per second
Resolution

Video output resolution
GOP Structure

Group-of-pictures frame arrangement

Stream Metadata

Container Format

Media container (fMP4, TS, …)
Segment Duration

Length of each stream segment
Bitrate Ladder Profile

Available quality tiers
Encryption / DRM Status

Content protection scheme

Do I need the original reference video?

No. Our no-reference models, ITU-T P.1204.3 and our own bitstream models, predict perceptual quality from the encoded file itself, for example from recordings of live channels or from on-demand assets.

Which codecs and formats are supported?

Quality scores are available for H.264, H.265/HEVC, and VP9 with ITU-T P.1204.3, and for MPEG-2 with our own model. Bitstream statistics also cover AV1 and MPEG-1, and pixel and full-reference metrics work for any codec FFmpeg can decode. You can analyze MPEG-TS, MP4/MOV, Matroska/WebM, AVI, or raw elementary stream files. Live HLS and DASH input is on our roadmap.

What is ITU-T P.1204?

P.1204 is the ITU standard family for short-term video quality prediction. It rates the perceptual quality of video segments of about 5 to 10 seconds. It includes no-reference models based on metadata (P.1204.1), the bitstream (P.1204.3), or bitstream and pixels (P.1204.5), and a reduced- or full-reference pixel model (P.1204.4).

Why use bitstream analysis instead of decoding every frame?

Bitstream analysis does not reconstruct the pixels of each frame. It needs much less CPU than pixel-domain analysis and scales to large content catalogs.

Can I run the analysis on my own files?

Yes. A command-line tool gives you bitstream statistics, pixel metrics, ITU-T P.1204.3 scores, and VMAF, PSNR, and SSIM against a reference. It runs on Linux, macOS, Windows, and Docker.