H.264 bitstream analyzer

[zambelli]

Any recommendations for H.264 bitstream analysis tools?

I'm looking for something that will tell me for each coded frame its type (IDR, I, P, B), compressed size, quantizer level, SPS/PPS/slice header info, and VUI/SEI metadata if available. And if it can dump all that info into a CSV, that'd be awesome.

Free or commercial, though free is always nice.

[LoRd_MuldeR]

Elecard StreamEye:
http://www.elecard.com/en/products/p...streameye.html

CodecVisa (formerly H264Visa):
http://www.codecian.com/downloads.html

These come to my mind. I don't know if any of them has a CSV export function though...

[drmpeg]

I have something cheap and simple (command prompt only). It will do most of the things you mention, but not quant levels.

http://www.w6rz.net/h264_parse.zip

Ron

[Blue_MiSfit]

Elecard is decent for basic stuff. I'm looking into purchasing Interra Vega, but we'll see if that makes it into my budget

[sonnati]

Blue_MiSfits, where are you working ?

[Blue_MiSfit]

A major broadcasting company. We're looking into Vega for its deep support for a wide variety of containers and video essences, including broadcast specific stuff like Closed Captions.

[Parabola]

For simple, high-level information dumped to file, I can't help wondering if the most suitable thing is an instrumented decoder. Take the reference decoder, add some prints to stdout and you're done. Could take someone familiar with the standard and JM less than a day.

Quantizer level is a tricky one... Qp can vary throughout the frame so you need to derive and report some sort of picture average for Y, Cr and Cb. This implies deeper decoding than just looking at headers.

If this was a question about HEVC, I could help zambelli with some commercial software or at least a trial .

[benwaggoner]

Hey Alex!

This is what I've been using: Tektronix MTS4SA

It's what I inherited, so I didn't do a big comparison, but it does everything you're asking about, and more.

About the complete opposite of free, though !

[LigH]

I just wonder if LAV Filters/Splitters expose useful data about video streams, or if a fork would help creating some statistical tool based on them, to report details beyond MediaInfo's header analysis, e.g. GOP length distrubution...

[nevcairiel]

They just use ffmpeg for parsing and decoding, if you want any extra information, use ffmpeg directly and/or fork it to expose internal information.

[LigH]

I am no C(++) programmer, can't fork, sorry...

[benwaggoner]

Originally Posted by nevcairiel

They just use ffmpeg for parsing and decoding, if you want any extra information, use ffmpeg directly and/or fork it to expose internal information.

Isn't that what ffprobe is for?

[pandy]

Originally Posted by LigH

I just wonder if LAV Filters/Splitters expose useful data about video streams, or if a fork would help creating some statistical tool based on them, to report details beyond MediaInfo's header analysis, e.g. GOP length distrubution...

Not sure about ffprobe capabilities - typical data are relatively easy to access but more complex?

For example - basic info works nicely:

@ffprobe -v quiet -pretty -print_format json -show_entries "format=size,bit_rate:frame=coded_picture_number,pkt_pts_time,pkt_pts,pkt_dts_time,pkt_dts,pkt_duration_time,pict_type,interlaced_frame,top_field_first,repeat_pict,width,height,sample_aspect_ratio,display_aspect_ratio,r_frame_rate,avg_frame_rate,time_base,pkt_size" -select_streams v:0 %1 > %1.json

provide this as a result

{
"pkt_pts": 0,
"pkt_pts_time": "0:00:00.000000",
"pkt_dts": 0,
"pkt_dts_time": "0:00:00.000000",
"pkt_duration_time": "0:00:00.040000",
"pkt_size": "116620",
"width": 1920,
"height": 1080,
"pict_type": "I",
"coded_picture_number": 0,
"interlaced_frame": 0,
"top_field_first": 0,
"repeat_pict": 0
},

But not more...

Perhaps some analyzer can be build around ffprobe (ffmpeg)...

[raffriff42]

Expanding on pandy's post above, here an ffprobe report in CSV format, suitable for importing into a spreadsheet:
Save as <something>.bat, then drag your media file on it to generate the report:

@echo off

:: ***** set path to ffprobe.exe if required *****
set FPROB="ffprobe.exe"

@echo entry,media_type,key_frame,pkt_pts,pkt_pts_time,pkt_dts,pkt_dts_time,best_effort_timestamp,^
best_effort_timestamp_time,pkt_duration,pkt_duration_time,pkt_pos,pkt_size,^
width,height,pix_fmt,sample_aspect_ratio,pict_type,coded_picture_number,^
display_picture_number,interlaced_frame,top_field_first,repeat_pict > "%~dpn1-ffdump.csv"

%FPROB% -select_streams v -print_format csv -show_entries frame "%~dpnx1" >> "%~dpn1-ffdump.csv" 

if errorlevel 1 pause 
exit 0

EDIT see also, my post on ffplay -debug :
http://forum.doom9.org/showthread.ph...97#post1692797

[LigH]

Thank you for this contribution. I hope it will be useful for the user originally asking in the german forum.

[raffriff42]

problem 99.9% solved IMHO - see my post, here.

[posdnya]

Just curios are anybody out of US interested in Mac version of the Analyzer?